Mala and Usha shared their water from a bottle. If mala and usha both drank for the same amount of time, but usha only drank 2/10 of the total bottle, what was the ratio of mala and usha speed? Choose the correct choice
A) 1:4 B) 2:5 C) 4:1 D) 3:5 E) 2:3
The answer is suppose to be C. 4:1. It's from the GMATPrep   Answer:option 4:1
<result>C</result>
Mala and Usha shared their water from a bottle. If mala and usha both drank for the same amount of time, but usha only drank 2/10 of the total bottle, what was the ratio of mala and usha speed?