Question

60% of the animals at a pet shop are dogs. If there are 42 dogs at the shop, then how many animals are there altogether?

25
70
45
50​

Answer 1

70

Explanation:

The formula for this question is

60/100 * x = 42

Look carefully at how this is written. You have so many pets (x) in the shop.

60 % of them are dogs. But that 60% we are told is also how many animals are dogs and that is 42.

So you have two facts meaning the same thing.

Multiply the equation by 100

100 * 60/100 *x = 42 * 100

60x = 4200

Divide by 60

x = 4200/60

x = 70

The total number of animals was 70