Question
The diameters of three inlet pipes of a cistern are 1.5
cm, 2 cm and 2.5 cm respectively. The pipe with the maximum diameter can alone fill up the cistern in 3 hours and 36 minutes. Find the time in which the empty cistern will be filled if all the three inlet pipes are opened together.Solution
Diameters of three inlet pipes of a cistern = 1.5 : 2 : 2.5 = 3:4:5 Ratio of efficiency will be = Square of diameter => 9 : 16 : 25 Total work = Time x Maximum diameter efficiency = 216 min x 25 If all three work = (216 x 25)/50(9+16+25) = 108 min = 1 hour 48 min
- 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.)
?2/3 = 33.33% of 107.99 + 45.45
- 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.)
{(440.89 ÷ 20.74) ÷ 2.88} × 48.65 = ? 3
√49 + 6.66% of 1725 + 22² = ?² - √361Â
? 3 + 95.06 X 39.87 ÷ 5.03 = 1271.89
Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?
26.52 ×...
(278% of 695) ÷ 543 =?
?3 - (77.98 ÷ 6.09 + 10.12)2 + (2.015 - 11.983)2 = 20.01 × (215.98(2/3) - √36.03)
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.)...
Relevant for Exams:
