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Time taken by B to complete the work = 40 – 20 = 20 days Let the total work = 40 units Efficiency of A = 40/40 = 1 units/day Efficiency of B = 40/20 = 2 units/day Required time taken = 0.90 x 40/(1+2) = 12 days
If x and y are two digits of the number 85254xy such that this number is divisible by 90. Find the minimum value of x + y?
If the difference between two numbers is 52 and they are in the ratio 7 : 3, then find the greater of the two numbers.
A Student was asked to add 8 and subtract 5 from a number. By mistake, he added 5 and subtracted 8. If his answer is 11, what should be the correct answer?
103² + 75² - 25² =?
If a, 1, b are in arithmetic progression and 1, a, b are in geometric progression, then a and b are respectively equate to _______ (where a ≠ b).
The cube of the difference between two given natural numbers is 1728, while the product of these two given numbers is 108. Find the sum of these two giv...
Out of 3 √4, √2, 6 √3, 4 √5 which number is the biggest?
