Aptitude Question:
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3 men finish painting a wall in 8 days. Four boys do the same job in 7 days. In how many days will 2 men and 2 boys working together paint two such walls of the same size?
a) 6 6/13 days
b) 3 3/13 days
c) 9 2/5 days
d) 12 12/13 days

Answer:

3 men -> 8 days

as men decrease => days increase

=> 1 man ->24 days =>1 man's 1 day work = 1/24

4 boys -> 7 days

=> 1 boy ->28 days => 1 boy's 1 day work = 1/28

so 2 men + 2 boys 1 day work = 2/24 + 2/28 = 1/12+ 1/14 = 13/84

so 2men + 2boys finish 13/84 of work in 1 day

so days to finish total work = 84/13 i.e 6 6/13

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A clock was set right at 5 am then it loses 16 minutes every day, on the 4th day when it shows 10 am, What is the exact time?Scott is jogging from point X to Y. 30 minutes later his friend Garrett who jogs 1 mile per hour slower than twice Scott s rate starts from the same point and follows the same path. If Garrett overtakes Scott in 2 hours, how many miles will Garrett have covered?

a)11/5
b)10/3
c)4
d)6