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Total age of three children = 20 × 3 = 60 years Let their ages be 4x, 5x and 6x respectively. => 4x + 5x + 6x = 60 => 15x = 60 => x = 4 Therefore the age of youngest child = 4 × 4 = 16 years
A, B, and C can finish a work in 12, 15, and 20 days, respectively. They all start working together, but A leaves after 4 days, and B leaves after 1 mor...
A can do 1/4th of a work in 15 days, B can do the 25% of the work in 20 days & C can do 1/5th of the work in 15 days. Who will complete the work fir...
'N,' 'V,' and 'R' have individual work completion times of 140 days, 112 days, and 80 days, respectively. They all started working together on a task, b...
‘A’ and ‘B’ can complete a certain work in 18 days and 10 days, respectively. They started working together and worked till completion of the wo...
A, B, and C can together complete a task in 12 days. A and B can complete the same task in 16 days, and B and C can complete it in 20 days. In how many ...
P, Q and R take 18, 15 and 10 days respectively to complete a job. Compare their efficiencies as a ratio.
