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Let total work = 150 units Amount of work done by Red JCB machine in one day = 150/10 = 15 units Amount of work done by Green JCB machine in one day = 150/15 = 10 units Amount of work done by both machine in one day = 15 + 10 = 25 units Time taken by both machines together to complete the work = 150/25 = 6 days So the part of work done by both the machines together in 4 days = 4/6 = 2/3 Hence, option d.
Atul has Rs.550 with him. He invested 40% of the amount at 5% p.a. for 6 years and rest at 20% p.a. for 5 years. Find the sum of simple interests receiv...
If Rs. 10,000 is invested at a simple interest rate of 8% per annum, it accrues Rs. 1,200 as interest over a period of 't' years. Given the same duratio...
A man invests 40% of a certain amount at a simple interest rate of 17% per annum, 60% of the remaining amount at a simple interest rate of 20% per annum...
If a sum when placed at compound interest grows to Rs.6,400 in 2 yrs and to Rs. 8,000 in 3 yrs, find the rate percent p.a.
If Rohit invested Rs. 16,000 at compound interest of 25% p.a., compounded annually, then interest earned by him in two years would be:
Ravi invests Rs. 2,000 on simple interest at 'a%' p.a. for 4 years and earned an interest of Rs. 800. His friend Vinay invests Rs. 4,800 on simple inter...
A man invested certain sum at 9.5% p.a. simple interest for his son who was 14 years old. If the amount received by the son when he was 27 years old is ...
A took a loan of Rs.5680 at simple interest of 30% p.a. and invested the same money in a scheme at simple interest of 40% p.a. Find the profit earned by...
Ankit placed some money in a fixed deposit that provides a compound interest rate of 16% per annum, compounded yearly. At the end of two years, he recei...
A person deposited Rs. 30,000 in a savings account that earned simple interest at a rate of 'x%' per annum. After 2 years, the total amount in the accou...
