Question
A man travelled a total distance of 350 km. He travelled
first 200 km on car with a speed of 20 km/h and rest of the distance on bike whose speed is 5 km/h less than that of the car. Find his average speed for the whole journey.Solution
Total time taken to cover the whole journey = 200/20 + 150/15 = 10 + 10 = 20 km Desired average speed = 350/20 = 17.5 km/h
What will come in the place of question mark (?) in the given expression?
(12.09)2 × 5.98 ÷ 26.95 = ? + 25Â
√441 * 7 – 10% of 250 + ? = 140% of 120

30% of 8/5 × 5/7 × 2870 =?
1231 + 1312 + 2113 – 3211 = ?
{(3/8) + (5/6)} × 120 – 53 = ?Â
What will come in the place of question mark (?) in the given expression?
23 X 35 - ? = (132 + 16) X 3 + 25
56 × 18 + ? × 21 – 49 × 12 = 63 × 26Â
- Evaluate: 168 ÷ 12 × 5 + 190 – 20% of 450