Let the speed of the faster train = x kmph ∴ Relative speed of the trains = (x - 18) kmph ⇒(x - 18) x 5/18 m/sec. Distance = 125 + 100 = 225 m and time = 9 sec ∴ (x - 18)x 5/18 = 225 / 9 ⇒x - 18 = (225 x 18 ) / (5 x 9) = 90 ∴ x = 90 +18= 108 kmph.
Bittu, Tittu and Mitthu invested Rs. 80000, Rs. 100000 and Rs. 120000 respectively to start a business. Partnership condition is that, each will get int...
A man invests Rs X in a scheme at 12% rate of interest for 8 years. After 8 years he reinvests the amount received at same rate of interest for same tim...
The simple interest received on a sum at the rate of 4 percent per annum is 3/5 of the sum. What is the time period?
A company declared 20% discount for wholesale buyers on an item. A wholesaler bought the item from the company for ₹400 after getting a discount. He f...
A sum of money lent at compound interest at the rate of 10% per annum is paid back in three equal instalments of Rs 3,993. Find the sum?
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Ankit invested Rs. 12,000 in a scheme that offers compound interest at an annual rate of x%, compounded once a year. After 2 years, he received an inter...
Vikas invested Rs. 12,000 at an annual compound interest rate of 30%, with the interest being compounded annually after every 10 months. What is the in...
The simple interest on a sum of money is 9/20 of the sum. If the number of years is numerically half the rate per annum, then find the rate percent per ...
