Question
P can construct a robot individually in 20 hours, while
Q requires 40 hours to complete the same task. If they collaborate, how many hours will it take them to assemble 6 robots?Solution
Time taken by both to build one robot = 1/ {1/20 + 1/40} = 1/(3/40) So, time taken by both to build 6 robots = 6 × (40/3) = 80 hours
More Time and work Questions
- Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___
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