ch- time and work , class 8
1. raju can do a piece of work in 5days . vijay and raju working together can finish it in 3days , in how manu days cam vijay do it alone?
2.sneha and sarika can fo a work in 12 days , sarika and sushmita can do it in 15days. sneha and sushmita can do if in 20days. who among these will take the least time, if put to do it alone ?
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Answer:
work done by Raju in 1 day = 1/5
work done by Vijay and Raju in 1 day =1/3
work done by Vijay in 1 day = 1/3-1/5 = 2/15
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