At a country concert, the ratio of the number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many boys are at the concert?

Question

soniaagarwal09 · Answer

Boys : Girls = 2:7 let the no. of boys be x so no of girls = 250+x so, x:(250+x) = 2:7 x/(250+x) = 2/7 7x = 500+2x 7x-2x = 500 x = 500/5 =100

soniaagarwal09 · Answer

There are 100 boys at the concert. Given the ratio of boys to girls is 2:7 and there are 250 more girls than boys, this number fits the information provided. To confirm, there would be 350 girls, which is indeed 250 more than the number of boys. 
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At a country concert, the ratio of the number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many boys are at the concert?

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