Start learning 50% faster. Sign in now
Let the total work be '60x' units. So, efficiency of 'A' = 60x ÷ 12 = '5x' units/day efficiency of 'B' = 60x ÷ 15 = '4x' units/day efficiency of 'C' = 60x ÷ 20 = '3x' units/day Work done by 'A', 'B' and 'C' together in 4 days = Work done by 'A' alone in 3 days + Work done by 'A', 'B' and 'C' together on 4th day Work done by 'A', 'B' and 'C' together in 4 days = 5x X 3 + (5x + 4x + 3x) X 1 = 15x + 12x = '27x' units So, Work done by 'A', 'B' and 'C' together in next 4 days = '27x' units Amount of work done in first 8 days = 27x X 2 = '54x' units Remaining work = 60x - 54x = '6x' units So, time taken by 'A' to complete the remaining work = 6x ÷ 5x = 1(1/5) days So, total time taken = 8 + 1(1/5) = 9(1/5) days
Rs.5400 is divided into two parts such that if one part be invested at 6% and the other at 9%, the annual interest from both the investments is Rs. 435....
Rs. 9500 is invested in scheme ‘A’ for a year at simple interest of 50% p.a. The interest received from scheme ‘A’ is reinvested for 2 years in ...
The simple interest on a sum of Rs X in 5 years is (2/5)of the principal. What is the annual rate of interest?
Anjali invested Rs.14000 in a scheme offering compound interest of x% p.a. compounded annually. If at the end of 2 years, interest received by her from ...
Find the compound Interest on Rs. 8,000 @15 % p.a for 2 years 4 month Compounded annually?
A person invested ₹15,000 in two schemes, Scheme A offering 10% per annum simple interest, and Scheme B offering 12% per annum simple interest. If the...
If the difference between the simple interest and compound interest, compounded annually, on Rs. 40,000 at (r + 4)% rate of interest for 2 years is Rs. ...
A certain sum of money becomes Rs. 1500 in 1 year and 2800 in 3 years at certain rate of simple interest. Find the sum of money invested.
Rs. 10000 when invested at simple interest of r% p.a. amounts to Rs. 12000 in 24 months. If the same sum had been invested for 1 year at compound intere...
The difference between compound and simple interest on a sum of money for 2 years at 5% per annum is Rs. 664. The sum is: