Let the efficiency of Anand = '5x' units/day Then, total work = 5x X 36 = '180x' units Efficiency of Akash = 5x X 1.4 = '7x' units/day Combined efficiency of Anand and Akash = 5x + 7x = '12x' units/day So, time taken to complete the entire work = 180x ÷ 12x = 15 days Hence, option a.
If 8 times the eighth term of an Arithmetic Progression (AP) is equal to 12 times its twelfth term, then the 20th term of the AP will be
The marks obtained by 12 students out of a maximum of 30 in a test are given as 25, 28, 24, 22, 25, 18, 20, 22, 19, 23, 22, and 26. Find the sum of the ...
The mean of a distribution is 25 and the standard deviation is 5. What is the value of coefficient variation?
Find the mode of the following data:
6,15,18,6,18,11,23,22,6,18,15,22,12
If the geometric mean of 4, 18, and (p + 4) is 12, what is the value of '0.4p'?
The arithmetic mean and geometric mean of two numbers are 7 and 2√10 respectively, then find the numbers.
Find the 5th term of the geometric progression whose first term is 128 and common multiple is 1/2.
The sum of the first 10 terms of an arithmetic sequence is 60 and the 10th term is 5. What is the first term of the sequence?
When the profit obtained by selling an item for Rs. 768 is the same as the loss suffered when the item is sold for Rs. 312. What ...
Amish invested 2500 Rupees in each of these schemes, offering simple interest of 12% per annum. 16% P.A. and 15% PA. respectively. Find the total intere...
