Question
The speed of current is 26 km/hr. If the speed of the
boat in still water had been 12 km/hr more than the original speed then it would take 7.5 hours to cover 495 km in downstream. Find the original speed of the boat in still water (in km/h).Solution
Let the speed of the boat in still water be ‘x’ km/hr According to the question, (x + 12 + 26) = 495/7.5 Or, x = 66 – 38 = 28
4.5 times 5/0.9× 35% of 240 =?
Simplify the expression:
(4x² - 16) / (2x - 4)
116 ÷ 280 of 1/2 + 3/5 × 5/3 = ?
(23 × 8) – (13 × 5) + 67 =? x 6         Â
212 + 14 × 23 – 28 × 15 = ? Â
7(1/7)% of 3500 + 6(2/3)Â % of 6000 = ? + 552.5
5.45% of 1854 – 37.5% of 1096 = ? – 48% of 630
What value should come in the place of (?) in the following questions?
3(1/2) + 5(1/2) = ? + 4(3/8)
What will come in the place of question mark (?) in the given expression?
128 + 16 X 6 - ? = 88 + 4 X 26Â
{(8× 8 + 3 × 39) - 620 ÷ 20} = ?