Question
The average of 6 numbers is 40. Later, two more numbers
are added whose average is 'x' . After this, the overall average becomes 20% more than before. What is the value of 'x'?Solution
ATQ,
Sum of 6 numbers = 6 × 40 = 240 New average after adding 2 numbers = 40 × 1.2 = 48 Total sum of 8 numbers = 8 × 48 = 384 Sum of new 2 numbers = 384 - 240 = 144 Average of 2 new numbers = 144 ÷ 2 = 72 So, value of x = 72
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
