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A takes 45 days A and B together takes 15 days LCM of 45 and 15 = 45 units Efficiency of A = 45/45 = 1 Efficiency of A and B = 45/15 = 3 So, efficiency of B = 3 – 1 = 2 B does 20% of the total work. Then, 20% of 45 = 9 units So, B will take 9/2 = 4.5 days to complete the work.
The average height of each student in a class of 36 students is 169 cm. If 4 new students joined the class, then the average height of the each student ...
The average value of the property of Anil, Sunil, and Vinay is Rs. 90 lacs. The value of the property of Anil is Rs. 30 lacs less than the value of the ...
The average score obtained by 25 students in a class test is 68 marks. The top place was shared by 3 people who got the same score. If the lowest score ...
Average age of 3 children born at intervals of 2 years is 8. How old is the eldest child?
If a:b:c = 3:4:6, and (5a + 3c) = 132, then find the value of '3b'.
A batsman scores 87 runs in the 21st match of his career. His average runs per match increases by 2. What was his average before the 21st match.
The average weight of 25 students in a classroom was found to be 52 kg. Later, it was discovered that one student’s weight was taken as 59 kg instead ...
The average age of 32 children and their teacher's age are 28 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
In a tournament, the average score of eight batsmen in the Chennai team is 80. If the highest three scores are not considered, th...
Consider three positive numbers that form a ratio of 2:3:4. If the sum of the squares of these numbers is 2349, what is the average of the largest and t...
