Q)A and B can do a piece of work in 6 days and A alone can do it in 9 days. In how many days B alone can do it?
A)18 days
B)3 days
C)15 days
D)71 days
Q)Find the greatest possible length of scale that can be used to measure exactly the following lengths of cloth 3m, 5m 10cm and 12m90cm.
A)300cm
B)30cm
C)10cm
D)30m
Q)The mean proportional between 9 and 225 is
A)9
B)15
C)45
D)5
Q)Sachin is younger than Rahul by 4 years. If their ages are in the ratio 7:9 respectively, then Sachin present age is
A)16 years
B)18 years
C)14 years
D)10 years
Q) A man sold two watches for Rs 1000 each, on one he gain 12% and on another 12% loss. Overall effect of the whole transaction is
A 1.44% gain
B)1.44% loss
C)1% gain
D)1% loss