Question

There are 600 children on a field. 30% of them were boys. After 5 teams of boys join the children on the field, the percentage of children who were boys increased to 40%. How many boys were there in the 5 teams altogether?​

Answer 1

Answer:

Step-by-step explanation:

so we had .3(600) boys or 180 boys

let the number of boys that joined be x

so .4(600+x) = 180+x

solve for x

30% of 600 = 180

180+5n = .40(600+5n)

Now just find n and thus 5n.