195
Step-by-step explanation:
Of means multiply and is means equals
40% * number = 78
Change to decimal form
.40 * number = 78
divide each side by .40
.40 number/ .40 = 78/ .40
number =195
one that is bigger than 3 1/2
36 girls
step-by-step explanation:
the 48 boys is 4 parts of the ratio
divide 48 by 4 to obtain one part of the ratio
= 12 ← 1 part of the ratio
3 parts = 3 × 12 = 36 ← number of girls