Question

There are 10 pets, some are dogs and some are cats each dog eats 6 biscuits and each cats eat 5 biscuits.there are total 56 biscuits for them.find number of dogs.

Answer 1

Total pets = 10

Let the number of dogs be x

Then the number of cats is 10 - x

Number of biscuits each dog eats = 6

then all dogs eat 6x biscuits

Number of biscuits each cat eats = 5. all the cats eat 5(10 - x); 50 - 5x biscuits

Total biscuits = 56

so, number of dogs =

6x + 50 - 5x = 56

50 + x = 56

x = 56 - 50

x = 6

THUS, Number of dogs = 6