Question
A car travels 150 miles at a constant speed of 50 miles
per hour. It then makes a 30-minute stop before continuing its journey at a constant speed of 60 miles per hour for another 100 miles. What is the approximate average speed for the entire journey?Solution
Total distance = 150 + 100 = 250 miles Time taken for the first 150 miles = 150/50 = 3 hours Time taken for the last 100 miles = 100/60 = 5/3 hours Total time = 3 + 0.5 (for the stop) + 5/3 = 31/6 hours Average speed = 250 / (31/6) = 1500/31 ≈ 48.38 miles per hour Answer: (A)
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
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.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
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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