What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)
9.2³ - 124.4 = ? – 12.11²

The present ages of Anuj and Deepak are in the ratio of 7:4 respectively. After 10 years their ages will be in the ratio of 4:3. What is the present age of Deepak?

Vijay purchased 50 dozen eggs at Rs. 40 per dozen. Of these, 40 eggs were found broken. At what price per dozen should he sell the remaining eggs in order to make a profit of 5% ?

A sum of money is invested at 6% simple interest per annum. How long will it take to increase its value by 60% ?

Manish is 80 years old. Raju is 10 years younger than Manish and 6 years elder to Rakesh. The youngest brother of Rakesh is Brijesh and he is 8 years younger to him. What is the age difference between Manish and Brijesh?

In quadrilateral PQRS, the bisectors of ∠R and ∠S meet at the point T (inside the quadrilateral) and ∠STR = 22.5°. If the ratio of ∠P to ∠Q is 4 : 5, then what is the difference between the measures of ∠Q and ∠P?

If an X-m long train running at a speed of 63 m/s crosses a railway platform in 28 sec, find the value of X, if the length of the railway platform is 213 m.

The lengths of each side of two squares are given as (5 + √ 3) cm and (5 - √ 3) cm, respectively. What is the sum of the areas of these two square?

If A can complete a task in 10 days and B is 25% more efficient than A, how long (in days) will it take them to complete 60% of the task when they work together?

₹4,445 is divided among A, B and C in such a way that if ₹65, ₹39 and ₹77 are deducted from their respective shares, they have money in the ratio 18:3:20. Find the difference between B’s and C’s original shares.

The median of the following observations 46, 64, 87, 41, 58, 77, 35, 90, 55, 92, 33 is 58. If 92 is replaced by 99 and 41 by 43 in the given data, then the new median is: