This is rational numbers (please help)

Question

Cindy has 150 caramel apples to sell. Each caramel apple is covered with one topping. 3/10 of the caramel apples are covered with peanuts. 

1/5 are covered with chocolate chips. 1/3 are covered with coconut.The rest are covered with sprinkles.

How many caramel apples are covered with sprinkles?

Answer 1

150 - (1/5 + 1/3+ 3/10+1/10)150 = 150- (95/150)150 = 150- 95 = 55 apples are covered with sprinkles

1/3 x 150 = 50 covered with coconut

1/5 x 150 = 30 covered with chocolate chips

1/10 x 150 = 15 covered with coconut

150-50-30-15 = 150-95 = 55 covered with sprinkles