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Let present age of ‘B’ be ‘x’ years Present age of ‘A’ = x × 1.25 = ‘1.25x’ years ATQ; (x + 22) + 20 = (1.25x + 22) Or, x + 42 = 1.25x + 22 Or, 20 = 0.25x Or, x = 80 So, present age of ‘B’ = 80 years And, present age of ‘A’ = 80 + 20 = 100 years Required sum = 80 + 100 = 180 years
In a 1.6 km race, 'A' gives 'B' a head start of 300 meters, but still 'A' wins the race by 100 meters. If 'B' takes 15 minutes to complete the race, cal...
A train takes 30 minutes to travel 20 km, but due to maintenance, its speed is reduced by 25% for the next 10 km. Find the total time taken by the train...
A man travelled a total distance of 350 km. He travelled first 200 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 5 k...
‘A’ and ‘B’ started moving towards each other at same time with a speed of 24 km/hr and 12 km/hr, respectively. If the distance covered by ‘A�...
Two trains of lengths 120 m and 150 m are moving in opposite directions at speeds of 45 km/h and 30 km/h, respectively. How much time will they take to ...
Vicky and Vikram start running simultaneously around a rectangular track of length 500m from the same point at speeds of 30 km/hr and 20 km/hr. When wil...
A man travelled a total distance of 300 km. He travelled first 100 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 10 ...
A man travelled a total distance of 400 km. He travelled first 300 km on car with a speed of 60 km/h and rest of the distance on bike whose speed is 40 ...
A man covered a distance of 240 km in 4 hours on a bike. How much distance will he cover on a bicycle in 8 hours if he rides the bicycle at one-tenth th...