Question
What is A's present age, if after 25 years his age will
be 15 times his age 10 years back?Solution
Let A's present age be x. A's age 25 years ago = (x - 25) A's age after 10 years = (x + 10) According to question, =>(x + 25) = 15 (x – 10) => x + 25 = 15x – 150 => 14x = 175 => x = 12.5 years
Find the LCM of 30, 35, 40, 60.
Find the LCM of the following fractions:
4/13, 5/7 and 7/5Â
If the product of two numbers is 350 and their HCF is 10, then find the LCM of the given two numbers.
If two numbers have a product of 350 and their HCF is 7, find the LCM of these numbers.
The LCM of two numbers is 168, and the numbers are in the ratio 4:7. Find the sum of the numbers.
The L.C.M of a² – 2a – 3 and a³ + a² + a + 1 isÂ
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.
If total number of factors of 1,260 is 'x', then find the value of (x - 4) (x + 6).
The sum of two numbers is 126 and their HCF is 14. Total number of such pairs of numbers is?  Â
Three numbers are in the ratio 2:3:4 and their HCF is 24. Find the numbers?