Question
X started to run from point ‘A’ to ‘B’ at a
speed of 23 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 20 km/hr at 11:00 am. If they meet each other at 3:00 pm then find the distance between points ‘A’ and ‘B’.Solution
Distance covered by X in 2 hours = 23 × 2 = 46 km Relative speed of X and Y = 23 + 20 = 43 km/hr Sum of distance covered by both in 4 hours = 43 × 4 = 172 km Total distance between points ‘A’ and ‘B’ = 46 + 172 = 218 km
Three numbers are in the ratio 5:3:2 respectively. If the HCF of the numbers is 4, then find the LCM of the numbers.
A number is three times another number and their HCF is 8. What is the sum of the squares of the numbers?
Find the LCM of 30, 35, 40, 60.
- The sum and the difference of the L.C.M and H.C.F of two numbers are 486 and 342. If one of the numbers is 18, find the other number.
Compute the difference between the LCM and HCF of the given numbers: 20, 50, and 100.
Sum of the two numbers is 49 and their HCF and LCM are 7 and 70, respectively. Find the sum of reciprocal of the given two numbers.
The ratio of two numbers is 6:11 and their LCM is 264. The numbers are:
If the highest common factor of two numbers is 20, then which of the following may be the least common multiple of the numbers?
Rs. 21,000 is split between 'P', 'Q', and 'R' such that one-third of P’s share equals 25% of Q’s share, and equals one-seventh of R’s share. Find ...
The ratio between three numbers is 7:3:2. Their HCF is given to be 5. Determine the LCM of the numbers.
