For the following questions answer them individually
The present ages of A, B and C are in the ratio of 8: 14: 22 respectively. The present ages of B, C and D are in ratio of 21: 33: 44 respectively. Which of the following represents the ratio of the present ages of A, B, C and D respectively ?
If the numerator of certain fraction increased by 100% and the denominator is increased by 200% the new fraction thus formed is $$\frac{4}{21}$$ What is the original fraction ?
The average speed of a train is 3 times the average speed of a car . The car covers a distance of 520 kms in 8 hours .how much distance will the train cover in 13 hours ?
A rope makes 125 rounds of a cylinder with base radius 15 cm. How many times can it go round a cylinder with base radius 25 cm?
A man riding a bicycle, completes one lap of a circular field along its circumferences at the speed of 14.4 km/h in 1 min 28 s. What is the area of the field?
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