Question
A solution of 960 ml has milk and water in 1:3 ratio. If an
equal quantity of milk and water is added and the new ratio becomes 2:5, calculate the value of x.Solution
ATQ,
Milk = (1/4) × 960 = 240 ml
Water = 960 – 240 = 720 ml
ATQ:
(240 + x)/(720 + x) = 2/5
⇒ 5(240 + x) = 2(720 + x)
⇒ 1200 + 5x = 1440 + 2x
⇒ 3x = 240
⇒ x = 80
A sum when invested at simple interest of 12% p.a. becomes Rs. 2,080 in 5 years.
If the same sum was invested at compound interest of 20% p.a. fo...Rohit invested Rs. 3000 in scheme 'C' for 4 years and Rs. 4500 in scheme 'D' for 3 years. If the simple interest rate for both schemes is 15% per annum,...
The difference between compound interest and simple interest at the same rate for Rs. 1800 for 2 years is Rs. 18. The rate of interest per annum is:
Suppose 'S' invested Rs. 40,000 each at 12% p.a. in two different Funds for 2 years, with one Fund offering compound interest (compounded annually) and ...
A certain amount of money, when invested at an annual compound interest rate of 'x%' compounded annually, grows to 1.5376 times its original value in 2 ...
Suresh earned an interest of Rs. 1161 on principal amount of Rs. 3600 at some rate of compound interest in 2 years. How much more/less interest would he...
A sum was put at simple interest at a certain rate for 7 years. Had it been put at 6 % higher rate, it would have fetched Rs. 1260 more. Find the sum?
Amit lent Rs. 25,000 to Rohit at compound interest of 10% p.a. (compounded annually) for 2 years. Rohit however paid him back at simple interest instea...
Vishal has certain sum of money with him. He invested 80% of the sum in scheme ‘X’ offering 15% p.a. simple interest for 8 years and received Rs. 27...
Rs. (x + 500) invested on simple interest amounts to Rs. 4,500 and Rs. 5,100 in 5 years and 7 years, respectively. Find the value of 'x'.
Relevant for Exams:
