Question
Before servicing, a car runs at a speed of 20 km/hr
while after servicing, it runs at a speed of 40 km/h. After servicing the car covers a certain distance in 6 hours. How much time would the car have taken to cover the same distance when it was not serviced?Solution
After servicing, Distance covered by the car = 40 × 6 = 240 km Required time taken = 240/20 = 12 hours
- The number of marbles with Amit and Rahul is 14 more than with Kabir. Rahul and Kabir together have 4 more marbles than Amit. If Amit and Kabir together ha...
In a two-digit positive number, the digit in the tens place is one less than the square of the digit in the units place. Additionally, the difference be...
- The sum of five consecutive even integers is 90. Determine (cube of the smallest) minus (square of the largest).
The difference between two numbers is 60% of the larger number. If the smaller number is 10, find the larger number-
Total of Series of n terms 1 + 1 + 3 + 1 + 3 + 5 + 1 + 3 + 5 + 7 ……………………
In a group of three numbers first is double of second and half of third. The average of three numbers is 56. Find the difference between the first numb...
Find the sum of the first 25 natural numbers.
The difference between the value of the number increased by 20% and the value of the number decreased by 30% is 120. Find the number.
- In a class, the ratio of boys to girls present is 4:3. The number of girls who are absent is 21 which is 30% of the total number of students. If all boys a...
The digits of a two-digit number ‘N’ are reversed to form a new number ‘M’. If M < N and N – M = 45, then which of the following maybe ‘N’...
Relevant for Exams:
