ratio, rate and proportion
In a club there are 1500 boys and some girls, the ratio of number of girls to the boys is 3:10. after some more girls joined the club, the ratio of number of girls to the number of boys becomes 9:15. Find the innitial number of girls in the club.
ratio
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
add a comment |
In a club there are 1500 boys and some girls, the ratio of number of girls to the boys is 3:10. after some more girls joined the club, the ratio of number of girls to the number of boys becomes 9:15. Find the innitial number of girls in the club.
ratio
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
If you have 1500 boys and some girls and a ratio of girls to the boys of 3:10. Then the initial number of girls is simply $$frac{1500*3}{10}=450$$
– Dr. Mathva
Nov 26 '18 at 19:53
add a comment |
In a club there are 1500 boys and some girls, the ratio of number of girls to the boys is 3:10. after some more girls joined the club, the ratio of number of girls to the number of boys becomes 9:15. Find the innitial number of girls in the club.
ratio
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
In a club there are 1500 boys and some girls, the ratio of number of girls to the boys is 3:10. after some more girls joined the club, the ratio of number of girls to the number of boys becomes 9:15. Find the innitial number of girls in the club.
ratio
ratio
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
asked Nov 26 '18 at 19:45
Hira Iftikhar
31
31
If you have 1500 boys and some girls and a ratio of girls to the boys of 3:10. Then the initial number of girls is simply $$frac{1500*3}{10}=450$$
– Dr. Mathva
Nov 26 '18 at 19:53
add a comment |
If you have 1500 boys and some girls and a ratio of girls to the boys of 3:10. Then the initial number of girls is simply $$frac{1500*3}{10}=450$$
– Dr. Mathva
Nov 26 '18 at 19:53
If you have 1500 boys and some girls and a ratio of girls to the boys of 3:10. Then the initial number of girls is simply $$frac{1500*3}{10}=450$$
– Dr. Mathva
Nov 26 '18 at 19:53
If you have 1500 boys and some girls and a ratio of girls to the boys of 3:10. Then the initial number of girls is simply $$frac{1500*3}{10}=450$$
– Dr. Mathva
Nov 26 '18 at 19:53
add a comment |
1 Answer
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oldest
votes
If there are 3 girls for every 10 boys let $B=10x=1500$ so $x=150$. Thus $G=3x=450$. The second part is not needed to find the initial number of girls but it is a similar problem. If the new ratio is $9:15$, then $B=15y=1500$ and $y=100$ so $G=9x=900$ meaning that the girl population has doubled.
answered Nov 26 '18 at 21:02
poetasis
328117
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If there are 3 girls for every 10 boys let $B=10x=1500$ so $x=150$. Thus $G=3x=450$. The second part is not needed to find the initial number of girls but it is a similar problem. If the new ratio is $9:15$, then $B=15y=1500$ and $y=100$ so $G=9x=900$ meaning that the girl population has doubled.
answered Nov 26 '18 at 21:02
poetasis
328117
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
add a comment |
If there are 3 girls for every 10 boys let $B=10x=1500$ so $x=150$. Thus $G=3x=450$. The second part is not needed to find the initial number of girls but it is a similar problem. If the new ratio is $9:15$, then $B=15y=1500$ and $y=100$ so $G=9x=900$ meaning that the girl population has doubled.
answered Nov 26 '18 at 21:02
poetasis
328117
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
add a comment |
If there are 3 girls for every 10 boys let $B=10x=1500$ so $x=150$. Thus $G=3x=450$. The second part is not needed to find the initial number of girls but it is a similar problem. If the new ratio is $9:15$, then $B=15y=1500$ and $y=100$ so $G=9x=900$ meaning that the girl population has doubled.
answered Nov 26 '18 at 21:02
poetasis
328117
If there are 3 girls for every 10 boys let $B=10x=1500$ so $x=150$. Thus $G=3x=450$. The second part is not needed to find the initial number of girls but it is a similar problem. If the new ratio is $9:15$, then $B=15y=1500$ and $y=100$ so $G=9x=900$ meaning that the girl population has doubled.
answered Nov 26 '18 at 21:02
poetasis
328117
answered Nov 26 '18 at 21:02
poetasis
328117
answered Nov 26 '18 at 21:02
poetasis
328117
answered Nov 26 '18 at 21:02
poetasis
328117
328117
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
add a comment |
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
Can anyone tell me what may have caused my answer to be downvoted? Was it not useful? It was voted correct. Did I do too much or too little? What?
– poetasis
Dec 9 '18 at 0:23
add a comment |
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If you have 1500 boys and some girls and a ratio of girls to the boys of 3:10. Then the initial number of girls is simply $$frac{1500*3}{10}=450$$
– Dr. Mathva
Nov 26 '18 at 19:53