Let the efficiency of a man and a woman be 'M' units/day and 'W' units/day, respectively. ATQ, (3M + 5W) X 12 = (5M + 3W) X 9 Or, 36M + 60W = 45M + 27W Or, 9M = 33W Or, (M/W) = (11/3) Let 'M' = '11a' and 'W' = '3a' So, 'b' = [11a ÷ (11a + 3a) ] X 1,092 = 858 Therefore, required value = 0.35 X (858 - 438) = 147
The ratio of two number is 6 : 5 and their HCF is 15. So find and their LCM?
Two boys are on opposite sides of a tower of 100 m height. If they measure the elevation of the top of the tower as 30° and 45° respectively the...
A girl found the answer for the question “subtract the sum 1/2 and 1/8 from unity and express the answer in decimals” as 1.5. The percentage...
If x = 2 + √3 then find the value of x3/2 + 1/(x3/2) = ?
The diameter of the base of a cylindrical drum is 21 dm and the height is 12 dm. It is full of petrol. How many tins each of size 15 cm × 11 cm &t...
If x+ 1/x = 3, then find the value of 2x/(3x²-5x+3)
If the Simple Interest and Compound Interest of a sum of money for two years are Rs. 1800 and Rs. 1935 respectively. Then find out the sum?
The efficiency of A,B,C,D are in the ratio of 6:5:4:3. If A and C can do a work together in 6 days. Then How many days B and D will take to complete the...
If 4x + 1/5x = 4, then find value of 125x³ + 1/64x³
In a Mixture , the ratio of Milk and Water is 7 : 5. If 12 litre mixture is drawn off and replaced by 8 litre water then the ratio of Milk and Water b...
