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Time required by B and C to complete the work = 5 × 15/3 = 25 days Time taken by A, B and C = 20 days Total units of work = 100 units B and C one day work = 4 units A, B and C one day work = 5 units A’s one day work = 5 – 4 = 1 units Units of work done by A = 2 × 100/5 = 40 units Required value of x = 40/1 = 40 days
Find the HCF of 932 and 748.
The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 280. If one of the number is 224, then the other number is:
The least number which when divided by 3, 6, 9 and 12 leave zero remainder in each case and when divided by 16 leaves a remainder of 3 is:
The HCF and LCM of two numbers, A and B, are 9 and 162, respectively. The difference between these two numbers is 27. Find their sum.
Let N be the greatest number that will divide 72, 105, 138 leaving the same remainder in each case. Then sum of the digits in N is:
The HCF and LCM of two natural numbers are 16 and 44, respectively. What is the difference between the two numbers, if one of the numbers is 22?
A number is three times another number and their HCF is 8. What is the sum of the squares of the numbers?
