Question
The average marks of 22 students is 64. If x new
students join with an average of 75 marks, the class average increases to 66. Find x.Solution
ATQ, 22 * 64 + x * 75 = (22 + x) * 66 1408 + 75x = (22 + x) * 66 75x – 66x = 1452 – 1408 9x = 44 x = 44 / 9
Three numbers a, b and c are co-prime to each other such that ab = 99 and bc = 275. Find the value of (a + b + c).
Find the largest number of the five digit which is exactly divisible by 48, 72 and 108.
The HCF of two numbers is 112, and their LCM is 3360. What is the sum of the numbers?
The LCM of the two numbers is 12 times their HCF. The sum of LCM and HCF is 429 and if both the number are smaller than their LCM. Find both numbers.
The LCM of two numbers is 5 times their HCF. The sum of LCM and HCF is 180. If one of the numbers is 150, then the other number is
If the average age of "Ava," "Bella," and "Cara" is 30 years, and the ratio of their ages is 5:7:3, what is the age of "Cara"?
The LCM of two natural numbers is 10 times their HCF. If the product of given two numbers is 1000, then find the LCM of the numbers.Â
If total number of factors of 3,240 is 'x', then find the value of (x - 3)(x + 5).
If the product of two numbers is 3026 and their LCM is 89 then their HCF is:
- The sum of the HCF and LCM of two numbers is 340, and the LCM is 16 times the HCF. If one of the numbers is 40, find the other number.
