Question

There are 360 seals. Of them are 9/20 are pups. The rest are adult seals . How many pups are the beach .

Answer 1

162 pups are on the beach

Explanation:

9/20 of 360

The key word "of" tells us to multiply

Variable x = number of pups

9/20 × x/360

Cross multiply

9 × 360 = 20 × x

3,240 = 20x

Divide both sides by 20

162 = x

Check our work:

9/20 = 162/360

Cross multiply

9 × 360 = 20 × 162

3,240 = 3,240

Correct