Question

Sam can type 20 words in 35 secorcs. How many words can he type in 90 seconds?

Answer 1

he can type about 51 words in 90 seconds because

use proportion

7x = 360

x = 51 3/7

x is about 51

Explanation:

Answer 2

51 words

Explanation:

20words=35 seconds

? =90 seconds

Cross multiplication to get

(90×20)/35

1800/35

51.42

Meaning he can type 51 words in 90 seconds