Question
A man invested Rs. 20,000 at simple interest of 'x%'
p.a. and received Rs. 40,000 after 2 years. If he had invested Rs. 25,000 at simple interest of 'x%' p.a. for 3 years, then find the interest earned by him from this investmentSolution
Total interest earned in 2 years = 40000 - 20000 = Rs. 20,000 ATQ; 20000 = (20000 X x X 2) ÷ 100 Or, x = 50 So, required interest earned = (25,000 X 50 X 3) ÷ 100 = Rs. 37500
Jack is twice efficient as Jill and Jill can do a piece of work in 30 days. Jill started the work and after a few days Jack joined him. They completed t...
- A team of 6 workers, each working 8 hours per day, can build a 200-metre-long wall in 15 days. How many workers would be needed to construct a 300-metre-lo...
 Saurabh can complete a piece of work in 20 days. He worked for 5 days and left. Anirudh completed the remaining work in 12 days. If both had done the ...
P and Q can complete a work in 28 days and 42 days, respectively. P, Q and R together can complete the work in 14 days. If R get a total wage of Rs. 546...
A can complete a work in 15 days. B takes 6 days less than A to complete the same work. In how many days can both of them together complete 80% of the w...
- Varun and Arnav can finish a work in 28 days and 56 days respectively when working alone. Varun starts first. In how many days should Arnav join him so tha...
A and B together can complete a work in 15 days, while B and C together can complete the same work in 20 days. If A, B, and C together can complete the ...
Ajay and Vijay together can paint a piece of furniture in 11 days. Vijay and Chirag together, as well as Ajay and Chirag together...
A takes 24 hours more than B to complete the work, and 32 hours more than C to complete the same work. The combined time taken by A and B to finish the ...
- 'X' can complete 75% of a work in 15 days, whereas 'Y' can complete 25% of the same work in 10 days. They both started working together, but 'Y' left the j...
