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Let total amount of work be 450 units (LCM of 18 and 25). Efficiency of ‘A’ = 450/18 = 25 units/day Efficiency of ‘B’ = 450/25 = 18 units/day Amount of work done by ‘A’ and ‘B’ together in 9 days = (25 + 18) × 9 = 387 units Time taken by B to complete remaining work = {(450 – 387)/18} = 3.5 days
Raju invested a certain sum at 25% p.a. compound interest, compounded annually, and earned an interest of Rs. 2925 in 2 years. Wh...
What sum of money must be given at simple interest for 8 months at 3% per annum in order to earn Rs. 260 interest?
A sum is lent on compound interest for 2 years at 9% p.a. If the compound interest on the sum is Rs.2445.3, find the sum.
Rs. 9,000 is invested in scheme ‘A’ offering simple interest of 20% p.a. and Rs. 6,500 in scheme ‘B’ offering simple interest of 8% p.a. What is...
An amount of 'a' is invested at an annual interest rate of 18% with simple interest, and another amount of 'a + 750' is invested at an annual interest...
An initial principal sum of Rs. 8000, invested by Pranav, accrued interest at a compound rate of 20% annually for a period of 2 years. Subsequently, the...
Simple interest earned on an amount of Rs.1400 at rate of R% per annum after 3 years is Rs.210. Find the simple interest earned on an amount of Rs.1600 ...
A sum of money, invested for 8 years on 5% per annum simple interest, amounted to ₹287 on maturity.
What was the sun invested in?
A sum of money grows to Rs. 5,400 in 6 years and Rs. 6,000 in 8 years under simple interest. What is the original principal amount?