Question
Buses start from a bus terminal with a speed of 10 km/hr
at intervals of 8 minutes. What is the speed of a boy coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 5 minutes?Solution
Let the speed of boy = x kmph According to the question, Distance travelled by bus in 8 min with 10 kmph = Distance travelled by boy in 5 min with (10 + x) kmph in opposite direction => 10 × 8/60 = 5/60 (10 + x) => 80 = 50 + 5x => x = 30/5 = 6 kmph.
Select the triad in which the numbers are related to each other in the same way as the numbers in the following triads.
8-17-35
23-47-95
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Exam of each of P, Q, R, S, T, U and V is on a different day of a week starting from Monday and ending on Sunday. P's exam is on Tuesday. Q's exam is on...
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Which letter-cluster will complete the given series?
BHERZ, DGHTX, FFKVV, _________
19 is related to 39 following a certain logic. Following the same logic, 1 is related to 3. To which of the following is 3 related following the same lo...
Select the triad which follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. Â
DI-NS-XC...
Three of the following words are alike in some manner and hence form a group. Which word does NOT belong to that group? (The words must be considered as...
What should come in place of? in the given series?
23Â 28Â 38Â 53Â 73Â ?
Which two signs should be interchanged to make the following equation correct?
18 − 23 × 455 ÷ 7 + 28 = 377
