Assessment Exam Category

Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used
together, then how long will it take to fill the tank ?
a) 12 min b) 15 min c) 25 min
d) 50 min e) None of these

Read Solution (Total 1)

the ratio be = 2:3 ==> time taken be = 3:2

lcm of 20 and 30 be =60

60/(2+3) =12
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Assessment Other Question

On 6th March 2005 Monday falls. What was the day of the week on 6th March 2004?
a) Sunday b) Saturday c) Tuesday
d) Wednesday e) None of these
In a row of 40 children, R is 11th from the right and there are 15 children between R and M. What
is M’s position from the left and of the row?
a) 14th b) 15th c) 13th
d) Can’t be determined e) None of these