Question
A train 200 metre long takes 30 sec to cross a man
running at a speed of 4 km/hr in the direction opposite to that of train. What is the speed of the train?Solution
Let the speed of the train be x Relative speed = (x + 4) km/hr ⇒ (x + 4) = (200 × 18)/(30 × 5) ⇒ (x + 4) = (3600)/(150) ⇒ x + 4 = 24 ⇒ x = 24 – 4 = 20 km/hr
'A' and 'B' invested in a business together. 'A', being the working partner, received Rs. 4,500 as commission. He then took 60% of the remaining profit,...
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.)...
20.11 × 6.98 + 21.03 × 6.12 – 37.95 + 92.9 × 5.02 =?
What will be the approximate value of the following questions.
(1/2 of 959.90 + 69.69% of 359.79) ÷ (√63.94 × 2/5 of 250.14) = ?
What approximate value will replace the question mark (?) in the following?
? = 1...
256.12 ÷ 7.92 + 26.11 × 7.82 – 44.09 = ?2Â
( 1728)1/3  × 10.11 × 3.97 ÷ 8.32 = ? + 15.022
The monthly savings of three individuals 'P', 'Q', and 'R' are such that the average savings of 'P' and 'Q', 'Q' and 'R', and 'R' and 'P' are Rs. 2,000,...
9214.39 - 6843.57 + 8435.22 + ? = 17620.47
- 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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