Math sentence question

Question

Mya has 150 cupcakes to sell at the school bake sale. Each cupcake is covered with one topping. 1/6 of the cupcakes are covered with sprinkles. 3/10 of the cupcakes are covered with chocolate syrup. 1/5 of the cupcakes are covered with strawberry syrup. How many cupcakes are covered with strawberry syrup

Answer 1

1/5 of 150 = 150/5 = 30 cupcakes covered with strawberry syrup

150/6 = 25 with sprinkles

3(150)/10 = 45 with chocolate syrup

30+25+45= 100

50 without sprinkles, chocolate or strawberry syrup

1/6 + 3/10 +1/5 = (25+45+30)/150 = 100/150 = 2/3

50/150 = 1/3