Welcome to ixamBee
Continue with your mobile number
ATQ, we can say that Let the actual speed of Suresh be x km/hr According to the question 80/x– 80/(x + 4) = 1 80 [(x + 4 – x) / (x2 + 4x)] = 1 320 = x2 + 4x x2 + 4x – 320 = 0 x2 + 20x – 16x – 320 = 0 x (x + 20) – 16 (x + 20) = 0 (x + 20) (x – 16) = 0 Taking, (x + 20) = 0 x = -20 (not possible) Taking, (x – 16) = 0 x = 16 Speed of Suresh = 16 km/hr ∴ Changed speed of Suresh = 16 + 4 = 20 km/hr
Ajay invested Rs.a in SI at 7% rate of interest per annum for 12 years. Vishal invested the same amount in SI at 5% rate of interest per annum for 8 yea...
A certain amount earns simple interest of Rs. 1600 after 4 years. Had the interest been 6% more, how much more interest would it have earned?
A person lends ₹16,000 to a client at a simple interest rate of 8% per annum. After 30 months, the client repays ₹9,200 and requests an extension fo...
Hemant invested Rs. ‘y’ at the rate of (r+2)% per annum on simple interest and after four years Rs. 27520 was obtained as an interest. If Rs. (y+250...
A man invested Rs. 20,000 at simple interest of 10% p.a. If he had instead invested the same sum on compound interest of 10% p.a., compounded annually, ...
Raj invested Rs. ‘5y’ in scheme ‘C’ offering simple interest of 20% p.a. and reinvested the interest earned from scheme ‘C’ at the end of 3 ...
R' invested some money at a compound interest rate of 40% p.a., compounded quarterly. If after 9 months, he received an amount of Rs. 1,99,650, then the...
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.
At the rate of any compound interest rate, it gets tripled in 4 years, in how many years it will become 729 times its own?
The simple interest on an amount of Rs. x at an annual rate of 4% for 3 years is Rs. 120 less than the simple interest on an amount of Rs. (x – 800) ...
