If student A sold 1/5 as many as student B who sold 90 , how many pizzas did student A sell ?

I'll be glad to check your answer.

1/5 times 90

Yes.

What is your answer?

18

My answer 18

You are right! :-)

Student A sold 18 pizzas.

To find out how many pizzas student A sold, we need to determine the fraction of pizzas student A sold relative to student B's sales. Given that student A sold 1/5 as many pizzas as student B, and student B sold 90 pizzas, we can calculate student A's sales.

Step 1: Calculate 1/5 of student B's sales:
1/5 * 90 = 18

Therefore, student A sold 18 pizzas.