Kelton can type 64 words in 30 minutes. How many words can he type in an hour and a half?

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Answer 1 · 2018-04-06T11:41:26

192 words

64 words = 30 minutes (or half an hour)

Doubling,
128 words = 60 minutes (or an hour)

Tripling,
192 words = 90 minutes (or an hour and a half)

Answer 2 · 2018-04-06T11:43:47

Assuming the same pace, Kelton can type 192 words in 90 minutes.

1 hour and 30 minutes contain 3 half-hours. It means Kelton can type

#3times64#

#=192# words in one hour and a half.