Latest R-SAT Aptitude Question SOLUTION: A factory produces nuts and bolts.A machine in it produces only nuts while another produces only bolts. The machine producing only nuts produces 500 nuts/min and need to be cleared

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(#M40158193) R-SAT Category question Keep an EYE

A factory produces nuts and bolts.A machine in it produces only nuts while another produces only bolts. The machine producing only nuts produces 500 nuts/min and need to be cleared 15 min after producing of 3000 nuts. The machine producing only bolts produces 300 bolts/min and needs to be cleared for 15 min after production of 3000 bolts. Find the minimum time required to produce 15000 pairs of bolts and nuts if both machines are operated simultaneously.

A. 100min
B. 90min
C. 110min
D. 120min
E. none

Asked In R-SAT TELLA ANJANI DEVI (7 years ago)

Unsolved Read Solution (2)

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Himanshu Gupta  (7 years ago)

1.Nuts:-15,000 to be produced
500/min and takes 15 min rest after producing 3000 units.
So , it will take 6 mins to produce 3000 units.than 15 min break.
Means- 6mins*5=30 mins, 3000*5=15,000
Rest- 15mins*4=60 mins.total 90 mins
1. bolts:-15,000 to be produced
300/min and takes 15 min rest after producing 3000 units.
So , it will take 10 mins to produce 3000 units.than 15 min break.
Means- 10mins*5=50 mins, 3000*5=15,000
Rest- 15mins*4=60 mins.total 110 mins.
As both machine runs simultaneously time taken is 110 mins.

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ALISHMITA SHARMA  (7 years ago)

100 min
Solution--
Time taken to prduce 500 nuts=1 min
So,tim etaken to produce 3000 nuts=6 min
also ,it is cleared for 15 min.So total time taken to produce 3000 nuts=6+15=21 min
Similarly ,time taken to produce 3000 bolts=10+15=25 mins
so min time taken to produce 15,000 pairs of nuts and bolts=time taken to produce 15,000 bolts(since bolts take more time)=25*5=125
But the last clearing time is omitted as bolts are already produced.So required min time is 125-25=100

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