If Janice reads *x* pages every 30 minutes, then she reads 2*x* pages per hour because there are 2 30-minute periods every hour. Because Janice reads for 4 hours, she reads 4(2*x*) = 8*x* pages.

Likewise, if Kim reads *y* pages every 15 minutes, then she reads 4*y* pages per hour. Because Kim reads for 5 hours, she reads 5(4*y*) = 20*y* pages.

So the answer probably looks something like 8*x* + 20*y*.

from Tumblr https://ift.tt/2jF5qkj

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