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Let the total work done to plough field ‘A’ = 180 units (LCM of 30 and 36) Then, efficiency of a buffalo = (180/30) = 6 units/day Efficiency of a bull = (180/36) = 5 units/day Total work required to plough field ‘B’ = 180 × 1.20 = 216 units Combined efficiency of 2 bulls and 1 buffalo = 5 × 2 + 6 × 1 = 16 units So, number of days required to plough field ‘B’ = 216/16 = 13.5 days
The diameter of the base of a right circular cone is 4.2 cm and its height is 10 cm. calculate the volume of the cone.
If A:B = 5:8 and C:B = 4:9 then find the value of (A:B:C) .
Sanjay earns Rs. 40,000 per month. He spends 20% of his income on conveyance. From the remaining amount, he allocates 25% for groceries. How much does h...
Find the value of ‘x’ if x% of 600 + {1440 ÷ x of 16} × 8 = 156
The respective ages of a mother and her daughter are 45 and 9 years. In how many years will the mother be thrice as old as her daughter?
A shopkeeper sets the selling price of an item higher than its cost price. After offering a 4% discount, the shopkeeper earns a 20% profit. What percent...
The average of 13 natural numbers is 45. If the average of first 7 numbers is 35 and the average of last seven numbers is 55, then find the value of num...
Find two numbers whose highest common factor (HCF) is 24 and least common multiple (LCM) is 144, and determine their product.
A clock has a cost price of Rs. 1,800. It is marked at a price that is 50% higher than the cost price and then sold after two consecutive discounts of 1...
