Question

at the elementary school fun fair,the ratio of the number of adults to the number of kids is 4:7. If there are 159 more kids than adults, how many adults are at the fun fair

Answer 1

the ratio of the number of kids is 4:7

that means for every 7 kids we have 4 adults

7 kids ---- 4 adults

the difference is 3

we dived the difference of the kids between the difference of the ratio

150/3 = 50

the number we obtained must be multiply by the ratio of each part

7(50) = 350 number of kids

4(50)=200 number of adults

there are 200 adults at the fun fair