rbull6857 rbull6857

04-07-2017
Mathematics

contestada

Sara reads 250 words per minute for 2 hours and gets tired and reads 125 words per minute for 3 hours. on average how many words per minute does Sara read?

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04-07-2017

250*(2*60)=30000
125*(3*60)=22500
22500+30000=52500
52500:((3+2)*60)=175 (words per minute)

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