Question

Will 5 ÷ 0.4 be rational or irrational? Why?

A. Rational. An irrational number divded by an irrational number is always rational.

B. Rational. A rational number divded by a rational number is always rational.

C. Irrational. A rational number divded by a rational number is always irrational.

D. Irrational. An irrational number divded by a rational number is always irrational.

Answer 1

B. Rational. A rational number divided by a rational number is always rational.

Answer 2

• B. Rational. A rational number divided by a rational number is always rational.

Explanation:

→ 5 ÷ 0.4

→ 5 ÷ 4/10

→ 5 × 10/4

→ 50/4

→ 25/2 [Which is rational.]