Question

You have 9 txts in 12 mins how many txts in an hour?

Answer 1

45 texts per hour

Explanation:

set this up as a proportion and cross multiply to solve:

9 texts/12 mins = x/60 mins (1 hr)

x=45

Answer 2

12 times 5 equals 60 which is an hour so 9 times 5 is 45