Question
A racing car going at an average speed of 108 km/hr
takes 15 minutes to complete a lap on a racing track. By how much should it increase its speed (in km/hr) to complete the lap in 12 minutes?Solution
Distance of the lap=108*(1/4) =27 kilometers Time in which lap has to be completed=12 minutes=12/60 =1/5 hr Speed=27/(1/5) Â =135 km/hr Increase=135-108 =27 km/hr
More Percentage Questions
2/9 of 5/8 of 3/25 of ? = 40
? = 2640 ÷ {(35% of 1240) – 170}Â
4567.89 - 567.89 - 678.89 = ?
60% of 250 + 14 × 10 - 210 = ?
(26)2 = {(20% of 40% of 18200) ÷ ?} × 1664 ÷ 128Â
13% of 200 + 56 ÷ 4 = 8% of ?Â
40% of 220 × 15 ÷ 20 = ?
(√784 ×20+ √4225 ×14)/(√1764 ×5) = ?
What will come in the place of question mark (?) in the given expression?
(70 × 8 ÷ 10) × 5 = ?
