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Let the efficiency of a child be '2x' units/day So, efficiency of a man = 2x X 3 = '6x' units/day And, efficiency of a woman = 6x ÷ 2 = '3x' units/day Work done by 3 men and 4 children in 18 days = {(6x X 3) + (4 X 2x)} X 18 = (18x + 8x) X 18 = '468x' units So, time taken by 6 women to do the same work = 468x ÷ (3x X 6) = 26 days
The sum of two numbers is 65 and their HCF is 13. Total number of such pairs of numbers is?
The HCF of two numbers is 9. Which of the following can never be their LCM?
The HCF of two numbers is 48, and their LCM is 1440. If one of the numbers is 576, find the other number.
A, B and C start running around a circular track and complete one round in 10, 15 and 25 seconds respectively. In how many seconds will the three meet a...
LCM of two numbers is 10 times their HCF. The product of the numbers is 18000. What will be the maximum possible difference between the numbers?
The sum of two numbers is 126 and their HCF is 14. Total number of such pairs of numbers is?
The LCM for two prime numbers x and y, (x > y) is 319. The value of (2y + x) :
The HCF of 450 and 740 is 150, their LCM is:
The least number which when divided by 6,18 and 20 leave a same remainder 3 in each case?
