Question
The average cost price of 13 pens (having equal cost
price) decreased by Rs.3, when one of the pen is replaced by a new pen having cost price of Rs.60. Find the cost price of the pen that was replaced.Solution
Let the cost price of each pen be Rs.x So, cost price of 13 pens = Rs.13x According to the question, => (13x – x + 60)/13 = x – 3 => 12x + 60 = 13x – 39 => x = 99 Therefore, the cost price of the pen that was replaced is = Rs.99
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.)...
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