Let the total work = 300 units Then, efficiency of ‘A’ = (300/40) = 7.5 units/hour Work completed by ‘A’ alone in 20 hours = 7.5 × 20 = 150 units Remaining work = 300 – 150 = 150 units So, efficiency of ‘B’ = 150/20 = 7.5 units/hour Therefore, combined efficiency of ‘A’ and ‘B’ = 7.5 + 7.5 = 15 units/hour So, time taken by ‘A’ and ‘B’ together to complete the work = (300/15) = 20 hours
HCF of two numbers 60 and 100 can be expressed in the form of (25m – 80) whereas LCM of these two numbers can be expressed in the form of (40n – 20)...
Find the HCF of 36, 108, and 156.
The ratio of two number is 13 : 10 and their HCF is 25. then find out their LCM?
If Ashish has 3 types of pens in a ratio 4 : 6 : 5 such that their LCM is 360, then find the sum of the highest and lowest number of pens that he has?
If the product of two numbers is 80 and their HCF is 5, then find the LCM of the given two numbers.
The sum of two numbers is 65 and their HCF is 13. Total number of such pairs of numbers is?
The LCM of two numbers is 960 while their product is 7680. Find the greatest common divisor of the two numbers.