Question
Find the distance travelled (in km) by the truck to
reach point B from point A, if a car cover 13% the same distance in 2.6 hours and a truck covers 50% of the distance in 6 hours. The sum of speed of the car and truck is 200 km/hr.Solution
Let total distance = D km Car covers 13% of D in 2.6 hours Speed of car = 0.13D / 2.6 = 0.05D Truck covers 50% of D in 6 hours Speed of truck = 0.5D / 6 = D / 12 = 0.0833D Sum of speeds = 200 0.05D + D/12 = 200 (3D + 5D) / 60 = 200 8D / 60 = 200 2D / 15 = 200 D = 1500 Distance between A and B = 1500 km
If 75% of a number is added to 75, the result is the number itself, then the number is:
In an examination of three papers of 200 marks each, a candidate got 120 and 100 marks in the first two papers. The percentage of marks he should get in...
5% of a = b, then b% of 20 is the same as __________.
After increase in the price of coffee by 15%, a person is able to buy 3 kg less for Rs. 1,840. Find the original and increased price of the coffee per kg?
- In a town, 30% of the population is ineligible to vote. Among those eligible, 50% are women. If 2/5 of eligible men and 1/5 of eligible women voted, find t...
When the income of the man is increase by Rs. 9000 then tax rate reduces from 18% to 15%. While in both the situation 25% income is tax free. Find his i...
The number of employees in a company increases by 8% each year. If the total employees after 2 years will be 2,916, find the present number of employees.
Raj saves Rs. 7500 more if he spends 60% of his income instead of 90%. Find the savings of Sanjay whose income is 30% more than that of Raj, and spends ...
A candidate just passed by getting 150 answers correct by attempting 225 of the total questions. Find the total number of questions in the examination i...
In physics examination a student scored 45% marks in the first paper out of 160. How much percent marks should he score in the second paper out of 140 ...
