CAT Question 168
In NutsAndBolts factory, one machine produces only nuts at the rate of 100 nuts per minute and needs to be cleaned for 5 minutes after production of every 1000 nuts. Another machine produces only bolts at the rate of 75 bolts per minute and needs to cleaned for10 minutes after production of every 1500 bolts. If both the machines start production at the same time, what is the minimum duration required for producing 9000 pairs of nuts and bolts?
1. 130 minutes
2. 135 minutes
3. 170 minutes
4. 180 minutes
November 27th, 2009 at 4:00 pm
170 mins
December 3rd, 2009 at 10:07 am
answer is option 3.
August 2nd, 2011 at 9:18 am
for bolts = (9000/75)+(9000/1500*10) mins
= 180 mins So 4