Question
Quantity I: A car travels at a speed of 60 km/hr for the
first 3 hours, and then at 80 km/hr for the next 2 hours. Find the average speed of the car for the entire journey. Quantity II: A truck travels 150 km at 50 km/hr, and then another 180 km at 60 km/hr. Find the average speed of the truck for the entire journey.Solution
Distance = (60 * 3) + (80 * 2) = 180 + 160 = 340 km Total time = 3 + 2 = 5 hours Average speed = 340 / 5 = 68 km/hr Quantity II: Total distance = 150 + 180 = 330 km Total time = (150 / 50) + (180 / 60) = 3 + 3 = 6 hours Average speed = 330 / 6 = 55 km/hr Answer: E (Quantity I > Quantity II)
What value should come in place of (?) in the given expression.
450 ÷ 9 + 75% of 160 − 64 ÷ 4 = ?
2/5 of 3/4 of 7/9 of 14400 = ?
7/3 of 4/5 of 15/56 of ? = 83
[564 + 32 of 18 × 9 ÷ 12 + 162 ] ÷ 4 = ?
What should come in place of (?) question mark in the given expression.
(25% of 320) + (3/8 of 400) − 30 = ?
45% of 360 - 160 + ? = √324
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
Find the simplified value of the following expression:
[{12 + (13 × 4 ÷ 2 ÷ 2) × 5 – 8} + 13 of 8]
18 × 15 + 86 – 58 =? + 38
√(24²+285-8²-172) = ?²
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