15%=3
5%=1
5(20)=100
1(20)=20
So, there are 20 students in the class.
To solve this problem,
we must recall that the formula for money with compound interest is calculated
as:
Total = Principal × (
1 + Rate ) ^ n
Total = $2,200 × ( 1 +
0.024 ) ^ 1
Total = $2,252.80
<span>Therefore the answer
is letter B.</span>
Could be wrong but try 6/3 then 2
Your answer to this problem is 180 girls in green valley elementary school.