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Let the pipe B be turned off after x minutes. Then, Part filled by (A + B) in x minutes + Part filled by A in (25 - x) minutes = 1 ∴ x (2/55- 1/35) + (25 - x) × 2/55 =1 x/35 = 1 - 50/55 ∴ x = 35/11 or 3*2/11 minutes Alternate method: Let total capacity of cistern = LCM(55/2, 35 ) = 385 L So A can fill in 1 min = 385/27.5 = 14L & B can fill in 1 min = 385/35 = 11L Now B is left in between , it means A is opened all time So in 25 min, A can fill = 14×25 = 350 So remaining tank = 385 -350 = 35L So B can do it in = 35/11 = 3*2/11min So B is turned off = 3*2/11min
Ankush puts Rs. 8,000 into two separate Systematic Investment Plans (SIPs) at a compound interest rate of 20% per annum. In SIP 'X', the investment is f...
Aman invested Rs. 'a' and Rs. (a + 2300) in SIP 'P' and 'Q', respectively, in a way that the amounts received from both SIPs after 2 years are equal. If...
A sum was put at simple interest at a certain rate for 2 years. If it had been put at 4% higher rate, it would have fetched ₹480 more. Find the sum
A certain sum of money becomes 3 times of itself in 10 years at simple interest. In how many years does it become double of itself at the same rate of s...
M invested Rs. 27,000 in two Mutual Funds, 'Axis Funds' and 'ICICI Funds,' for 5 years and 2 years, respectively. 'Axis Funds' provide simple interest a...
The interest earned on investing Rs. 5000 for 2 years at the rate of 20% p.a., compounded annually, is used to purchase an article. If the article is la...
A sum of ₹50,000 is deposited with an annual simple interest rate of 40%. Calculate the total amount that will be obtained after a period of 42 months.
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2700 after 3 years. If the same amount is investe...
The simple interest received on a certain sum is Rs. 500 less than the sum invested. If the sum was invested at 10% p.a. for 6 years, then find the simp...
