RRB GROUP D QUANT QUIZ

A, B, C start running at the same time and at the same point in the same direction in a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds. After what time will they meet again at the starting point?

Amrit is twice as good a painter as Kushal and together they finish a work in 6 days . In how many days will Kushal alone finish the work ?

The sum of two numbers is 25 and the product is 78 . What should be the sum of their reciprocals?

If $\frac{\sec \theta+\tan \theta}{\sec \theta-\tan \theta}=\frac{5}{3}$, then, find the value of ' $\sin \theta$ '.

A shopkeeper cheats to the extent of 10% while buying and selling fruits, by using tampered weights. His total gain, in percentage, is :

A piece of equipment cost a certain factory Rs. 700,000 . If it depreciates in value, $15 \%$ the first year, $13.5 \%$ the next year, $12 \%$ the third year, and so on, what will be its value at the end of 10 years, all percentages applying to the original cost?

The average of 82 numbers is 120 . If each number is multiplied by $0.6$ and then $1.2$ is added to each number, the average of the new set of numbers is:

Find the average of first 15 multiples of 3.

Find the value of $\frac{\left(952^{2}-772^{2}\right)}{952+772}$

Last year, the cost of a Tomato increased by $20 \%$ over that of the last year. Last year a Tomato costed Rs. 10 and a Potato costed Rs.5. This year it costs Rs. 16 more to buy 5 Potato and 3 Tomato. Find the percentage increase in the price of the Potato: