Question
If a car runs at 45 km/hr, it reaches its destination
late by 13 minutes but if runs at 60 km/hr it is late by 7 minutes. What is the correct time for the journey?Solution
Distance = Difference in time x (S1 x S2)/(S1 – S2) D = [13 – 7]/60 x {(45 x 60)/[60 – 45]} => (6/60) x (60 x 50)/15 => 18 km Time, T = D/S (take any one of the speed) => 18/45 = 18/45 x 60 = 24 minutes Then, correct time is 24 – 13 = 11 minutes
Divisor is 7 times of Quotient and 3 times of its remainder. If the remainder is 7. Find the dividend?
In a sequence of three natural numbers, the largest number is 25 more than the smallest. The smallest and the second smallest num...
- ‘N’ be the highest 3-digit number which leaves a remainder of 3 when divided by 4, 6, and 9. What is the least number that must be added to ‘N’ to ...
A number when divided by 315 leaves remainder 46 and the value of quotient is 7. Find the number.
Find the average of first 12 whole numbers.
- When a number is divided by 63, it leaves a remainder of 34. What would be the remainder when this number is divided by 9?
Determine the smallest four-digit number that is evenly divisible by 12, 22, and 42.
The sum of two numbers is 18 while the sum of their squares is 164. Find the sum of the cubes of those two numbers.
- If 246x179y is divisible by 72, find the value of (x + 2y).
The sum of two numbers is 32 and one of them exceeds the other by 18. Find the greater number.
Relevant for Exams:
