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Let the initial radius, height be r, h ⇒ New radius = r + r/5 = 6r/5 ⇒ New height = h – 3h/10 = 7h/10 ⇒ New Area = π × 36r^2/25 × 7h/10 = 252πr^2h/250 ∴% increase in Area = 2/250 x 100 = 0.8%
If a + b + c = 0, then what is the value of a3 + b3 + c3 - 3abc?
If 120 liters of milk solution contains 60% milk, how much milk should be added to make the solution 80% milk?
The ratio of the incomes of Vineet and Vidya is 12:5 respectively. Vineet saves 25% of his income while Vidya saves 20% of his income. The sum of their ...
Ramu has lent Rs. 60,000 to Murali and Bansi at 7% p.a. and at 11% per annum respectively. At the end of the year, he has gained an overall interest at ...
In a class, 60% of the students are boys, and the rest are girls. If 40% of the boys and 50% of the girls passed an exam, what percentage of the total s...
A man sold one shirt and one t-shirt for Rs. 4000 on shirt he gained 21% and he lost 14% on t-shirt. If overall profit is 7%, then cost price of t-shirt is
A shopkeeper has 76 kg rice a part of it, he sells at the profit of 28% and rest at loss of 10% and he get the loss of 8% so what is the quantity sold a...
In what ratio rice at 34 Rs/kg should be mixed with the rice at 27 Rs/kg so that selling mixture at Rs 39 per kg gives the profit of 30% if the quantity...
A vessel contains some milk .6 liter of the milk was taken out of the vessel and replaced with 6 liter of water and again 6 liter of mixture was taken o...
Cost of two types of pulses is Rs.15 and Rs, 25 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the pr...
