Question
Rahul can complete a project in 50 days, while Karan can
finish the same project in 75 days. Rahul starts working alone, and after 30 days, Karan joins him. How many additional days will Rahul and Karan take together to finish the remaining work?Solution
ATQ; Let the total work = 150 units (LCM of 50 and 75) Rahul’s efficiency = 150/50 = 3 units per day Karan’s efficiency = 150/75 = 2 units per day Work done by Rahul in 30 days = 30 × 3 = 90 units Remaining work = 150 – 90 = 60 units Work done by Rahul and Karan together = 60/(3+2) = 60/5 = 12 days
1 packet of biscuits costs Rs 16 but a pack of 4 of the same packet of biscuits costs Rs 56. What is the effective discount (in %) on the pack?
Rohan purchased an item for which there was a 13.5% discount offered on the part of the payment made in cash and a 6.25% surcharge on the part of the p...
At a clearance sale, a shopkeeper gives a 45% discount. If a customer paid Rs. 330 during the sale, then what is the marked price of that shirt?
Successive discounts of 18% and 22% are equal to a single discount of ______.
A company sells two products, X and Y. The selling price of product X is ₹500, and the selling price of product Y is ₹800. The company offers a 10%...
A TV was available for Rs 14,500. The price came down to Rs 11,745 during the Diwali sale. What is the percentage discount?
Amit sold an article for ₹369.60 after allowing 12% discount on the marked price. Had he not allowed any discount he would have earned a profit of 20%...
Two successive discounts of 20% and 10% are equal to what single discount percentage?
Amit sold an electric iron for ₹ 5312 after giving a discount of 17% on the market price. Had he not given the discount, he would have earned a profit...
A reduction of 10% in the price of sugar enables a man to buy 10 kg more for RS 300. Find the reduced price per kg of sugar.