Question
A buffalo alone can plough field ‘A’ in 10 days. A
Bull alone can plough the field ‘A’ in 16 days. Find the number of days taken by 1 bulls and 3 buffalo to together plough field ‘B’ that is 45% larger than field ‘A’?Solution
Let the total work done to plough field ‘A’ = 80 units (LCM of 10 and 16) Then, efficiency of a buffalo = (80/10) = 8 units/day Efficiency of a bull = (80/16) = 5 units/day Total work required to plough field ‘B’ = 80 × 1.45 = 116 units Combined efficiency of 1 bulls and 3 buffalo = 5 × 1 + 3 × 8 = 29 units So, number of days required to plough field ‘B’ = 116/29 = 4 days
A man buys a radio for ₹2000. He sells it to a retailer at a profit of 25%. The retailer sells it to a customer at a profit of 20%. What is the final ...
A Person 'P' bought 240 earphones, which was 20% more than the number of speakers he bought. He sold each earphone at Rs. 20 for ...
Profit percentage earned on selling article 'I' is the same as the percentage loss incurred on selling article 'J'. If the cost price of article 'I' is ...
By selling 72 items, a man gets a profit equal to the selling price of 9 items. Find the profit percentage.
How many kilograms of rice cost Rs. 60 per kg? must be mixed with 24 kg. of rice costing Rs. 42 per kg. so that there may be a gain of 12% by selling th...
Profit percentage received on a product when sold for Rs.450 is equal to the percentage loss incurred when the same product is sold for Rs.300. Find the...
A shopkeeper sells an article at a Loss of 20% of the selling price. Find the actual loss percentage.
A trader bought an article for Rs. 900 and marked it 20% above of its cost price. If he sold it after giving a discount of Rs. 45 then find the profit p...
After giving a discount of 20% on the marked price of an article, it is sold for ₹120. Had the discount not been given, the profit would have been 20...
A merchant possesses 60 identical items, each marked up by 180% above the cost price. He sells 30 of these items at a 25% discount and the remaining 30 ...
