Question
Tap A can fill a tank in 10 hours. Tap B can fill 12.5%
part of the same tank in 5 hours, whereas Tap C can alone empty a tank in ‘x’ hours. 2/5 part of the tank is filled in 8 hours, when all three taps are opened together. How much time (in hours) will Tap A and C together will take to fill 25% part of the tank?Solution
Tap A alone can fill the tank in = 10 hours. Tap B alone can fill the tank in = (8/1) × 5 = 40 hours Tap C alone can empty the tank in = x hours (A + B +C) together can fill the tank in = 8 × (5/2) = 20 Taking LCM of 10, 40 and 20 = 40 Efficiency of Tap A = 4 Efficiency of Tap B = 1 Efficiency of Taps (A + B +C) = 2 Efficiency of Taps (A +C) = 2 – 1 = 1 Tap A and C together take to fill 25% part of the tank in, => (25/100) × (40/1) = 10 hours
A started a business with an investment of Rs 32,000. After 2 months B joins in with 5/8 of the amount that A invested and A withdraws Rs 4,000. After 2...
A toy is sold for Rs. 900 at 50% profit when profit is calculated on selling price. Find the profit% on cost price?
- Neha bought a designer dress for Rs. 12,600 and later sold it to her friend for Rs. 14,112. How much profit percent did she make?
A shopkeeper marks his goods 50% above the CP and gives 20% discount to customer. At the time of selling the goods he uses 900gm weight instead of 1 kg....
'C' sells a laptop at a profit of 50%. Had the profit percentage earned on selling the laptop been numerically equal to the cost price of the laptop, th...
The selling price of an item rose from Rs. 320 to Rs. 448. Calculate the percentage increase in its price.
A bought an article at 12.5% less of the marked price and sold it at 5% more than the marked price. Find the profit earned by him.
A Publisher published 2500 books for Rs. 175000. He gave 400 books free as samples to some books shops, besides he was able to sell 2/3 rd of the remain...
Navya buys two article A and B at the same cost price Rs. P. Then, She markup both articles by 75% above their cost price. Then, she sold article A at R...
A shopkeeper bought 3 different types of goods: 100 items at ₹50 each, 200 items at ₹40 each, and 50 items at ₹60 each. If he sold all items at �...