Question

If you can solve 20 multiplication facts in one minute how long will it take to solve 50 facts

Answer 1

If you can solve 20 multiplication facts in one minute then you could solve 50 multiplication facts in 3 minutes

1 minute = 20 facts

2 minutes = 40 facts

3 minutes = 60 facts

We can check our work by doing the unit rate:

60 facts ÷ 3

____________ <--- fraction bar

3 minutes ÷ 3

= 20 facts

__________ (20 facts per minute)

1 minute

Answer 2

150s or 2 min and 30 s

Explanation:

20 facts = 1 min

10 facts = 30s

50 facts = ? min

50 / 10 = 5

30 * 5 = 150s

150s = 2 min and 30 s