Question
Three years ago, the ages of
Arnav and Bheema were in the ratio 3:4. Chinky’s current age is 33.33% greater than Arnav’s current age, and the combined present ages of Bheema and Chinky amount to 71 years. Calculate the sum of the current ages of Arnav and Bheema.Solution
ATQ, Let the present age of Arnav = 3a + 3 And the present age of Bheema = 4a + 3 4a + 3 + (3a + 3) × 33.33/100 = 71 4a + 3 + (3x + 3) × (4/3) = 71 4a + 4a = 71 – 3 – 4 8a = 64 a = 8 The present age of Arnav = 3 × 8 + 3 = 27 years The present age of Bheema = 4 × 8 + 3 = 35 years Required difference = 35 + 27 = 62 years
A builder needs to transport sand and gravel. A truck can carry 4 tons of sand and 3 tons of gravel. A van can carry 2 tons of sand and 2 tons of grave...
A person who spends 55% of his salary saves the remainder. His salary goes up by 15%, but his savings stay the same, and he now spends Rs. 3,300 more. D...
In a triangle ABC, the sides are AB = 15 cm, BC = 20 cm, and AC = 25 cm. Find the area of the triangle using Heron’s formula.
Two individuals, P and Q, set off from points X and Y simultaneously, moving toward each other. P travels at a speed of 60 km/h, while Q moves at 40 km/...
In an election between two candidates, the winning candidate secured 25% more votes than the losing candidate. If the winner rece...
A person 'P' borrowed some money from a friend who lends under a unique interest structure. For the first two years, the annual i...
A person sells two items, X and Y. The marked prices of X and Y are 25% and 40% higher than their cost prices, respectively. After a 10% discount on bot...
Tarun and Saurabh together can complete a task in 10 days. Tarun and Reena together can finish the same task in 14 days. Reena and Saurabh together can ...
If sin x + cos x = 7/5, find sin⁴ x + cos⁴ x: