Question
A man can do a work in 20 days and a woman can do the
same work in 30 days. In how many days will 2 men and 3 women do the work?Solution
LCM (20, 30) = 60 Let the total work be the LCM of the time taken by the individuals. Hence, the total work = 60 units Efficiencies, 1 man does each day = 60 / 20 = 3 units 1 woman do each day = 60/30 = 2 units Time taken by the mentioned workforce to finish the work = 60 /(2×3+3x2) = 5 days
- If the mean proportion of 3.6 and 1.6 is 'k', then find the value of '5k'.
There are three numbers: A, B, and C. It is given that 45% of A, (3/5) of B, and 1.5 times C are all equal. What is the ratio of A, B, and C?
The ratio of two numbers P and Q is 6: 11 respectively. When 5 is added to P and 84 is subtracted from Q, then the ratio of P and Q becomes 5: 2 respect...
Rs 1080 was divided among Amit, Bhaskar and Charu in the ratio of 13:8:15 respectively. Find the amount received by Amit and Bhaskartogether.
A sum of money is divided among P, Q, R and S in the ratio of 8:9:13:14 respectively. If the share of R's is Rs. 1620 more than the share of Q, then wha...
Ratio of income of Prashant and Palak is 9:8. Income of Chhaya is 4/5 of income of Prashant and difference between income of Palak and Chhaya is ₹2400...
Two years ago the ratio of annual salary of three friends P, Q and R is 4 : 3 : 5. Every year since then the salary of P, Q and R increases by 10%, 12% ...
What is the mean proportion between 3 and 27?
The ratio of the two numbers is 7:13. 150% of the first number is equal to the 60% of the second number. Find the sum of both the numbers.
What is the fourth proportional to 2, 5, 12?
