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Let tap ‘A’ fill the tank and tap ‘B’ empty the tank. Taking LCM of 20 and 28 = 140 Efficiency of A = 7 Efficiency of (A – B) = 5 Efficiency of B = 7 – 5 = 2 Tap B will empty the tank = 140/2 = 70 So, tap B will empty the tank in 70 hours.
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 ratio of two numbers is 9:12 and their LCM is 324. The numbers are:
The LCM of two numbers is 960 while their product is 7680. Find the greatest common divisor of the two numbers.
Three boys step off together from the same spot. Their steps measure 64 cm, 80 cm and 88 cm respectively. The minimum distance each should cover so that...
The least number which when divided by 16, 32 and 48 leave remainder 4, 20 and 36 respectively is?
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 ratio of two numbers is 6:14 and their LCM is 126. The numbers are:
The LCM of two numbers is 540, and their HCF is 18. If one of the numbers is 90, find the other number.
Find the smallest multiple of 10 that, when divided by 4, 6, and 9, leaves a remainder of 4 in each case.