Question
A tank can be filled by a tap in 10 minutes and by
another tap in 30 minutes. Both the taps are kept open for 5 minutes and then the first tap is shut off. After this, the tank, will be completely filled in what time?Solution
Part filled by Tap A in 1 minute = 1/10 Part filled by Tap B in 1 minute = 1/30 (A+B)’s 5 minute work = 5 × (1/10+1/30) = 5 × ((3+1)/30) = 5 × (4/30) = 2/3 Remaining work = 1 - 2/3 = 1/3 1/30 Part filled by Tap B in = 1 minute 1/3 Part will be filled in = (1/3)/(1/30) = 30/3 = 10 minute Alternate method: Let total capacity of tank = LCM(10, 30) = 30 L So A can fill in 1 minute = 30/10 = 3L & B can fill in 1 minute = 30/30 = 1L So Both taps together filled in 5 minutes =( 3+1)×5 = 4×5 = 20 L So remaining tank = 30 – 20 = 10 So this 10L is completed filled by B tap = 10/1 =10 minutes
Select the option that is related to third number-cluster in the same way first number cluster is related to second number-cluster.
94: 97 ...In the following question, select the related word from the given alternatives.
GSJM : PMVJ : : USBN : ?
Select the option that is related to third word in the same way as the second word is related to first word.
SETS : WAXO :: PORT : ?
6 : 120 : : 24 :Ā ?
Select a suitable figure from the Answer Figures that would replace the question markĀ (?)Ā from question figure.
Five marbles named as A1, K1, P1, R1, and T1 are kept one above the other (not necessarily in the same order). Only marble T1 is between K1 and P1. P1 i...
Toyotaā is related to āJapanā in the same way āSamsungā is related to ā___ā.
Select the option that is related to the third number in the same way as the second number is related to the first number.
55 : 3136 :: 48 : ?Select the option that is related to third number cluster in the same way second number cluster is related to first number cluster.
14: 168 :: 21: ?
Select the option that is related to third cluster in the same way first cluster is related to second cluster.
TURN : 219 :: MAINS: ?
Relevant for Exams:
