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Start learning 50% faster. Sign in nowLet their present age be 5x and 3x respectively. Product of their ages = 15x² = 6000 => x² = 400 => x = 20 Present age of A = 5x = 100 years Present age of B = 3x = 60 years Ratio of their ages after 4 years = (100+4) : (60+4) = 104:64 = 13:8
Two trains running in opposite directions cross a pole in 25 seconds and 15 seconds respectively and they cross each other in 21 seconds.Find the ratio ...
Train ‘A’ running with a speed of 72 km/h crosses a pole in 8.5 seconds. If the time taken by train ‘A’ to cross train ‘B’ running with a sp...
A 160 m long train crosses another 290 m long train running in the opposite direction in 10 seconds. If the shorter train crosses a pole in 8 seconds, w...
Train ‘A’ running with a speed of 19.8 km/hr can cross a standing goods train of 4 times its length in 40 seconds. Find the time taken by 250 metres...
A train 248 meter long running with the speed of 74 kmph crosses a bridge in 18 seconds then what is the length of bridge?
Two trains ‘A’ and ‘B’ started from station ‘P’ and ‘Q’ towards station ‘Q’ and ‘P’ respectively at the same time. When they met...
A train crosses a 250-metre-long platform in 18 seconds, and a tunnel 60% longer than the platform in 27 seconds. Find the speed of train in km/h.
Train ‘A’ running with a speed of 45 km/h crosses a pole in 4 seconds. If the time taken by train ‘A’ to cross train ‘B’ running with a spee...
Two trains start at the same time from Dehradun and Jaipur and proceed toward each other at the speed of 55 km/hr and 25 km/hr respectively. When they m...
