Question
Peter and Rachel can complete a project together in 20
days. Peter takes four times as long as Rachel to complete the same project alone. Find the time taken by Rachel to complete the project alone.Solution
ATQ, Let Rachel's time to complete the project alone be 'r' days. Therefore, Peter's time is '4r' days. Their combined work rate is (1/r) + (1/4r) = (1/20). 
Rachel can complete the project alone in 25 days.
A vessel contains 120 litres of milk and water in the ratio of 3:1. If 15 litres of milk is added to the mixture, then find the ratio of milk to water i...
A chemical plant produces two types of solutions, Solution X and Solution Y, which it combines to create a final product. The details are as follows:
A mixture consisting of 40 liters of milk and water has water accounting for 10% of its total volume. To increase the percentage of water in the mixture...
Vessels A and B contain mixture of milk and water in the ratios 3:7 and 5:3 respectively. In what ratio should quantities of mixtures be taken from A an...
A 250 litres mixture contains milk and water in the ratio 4:1 respectively. If 40% of the mixture is replaced with the same quantity of water, then find...
- Mixture ‘D’ consists of milk and water in the ratio 4:5. Another mixture ‘E’ has milk and water in the ratio 3:7. If 90 litres of ‘D’ and 70 li...
Three Jar of equal volume contains milk mixed with water. The ratio of milk and water are 2:1, 2:3 and 4:5 respectively. Contents of these Jars are pour...
- 180 litres of a mixture is made up of juice and soda in the ratio of 4:5, respectively. If 36 litres of the mixture is withdrawn and replaced with the same...
Three mixtures: A, B, and C containing 35%, 55%, and X% of water, respectively. If all these mixtures are mixed in the ratio of 2:2:1 to form a resultan...
Two mixtures, 'A' and 'B', each consist of milk and water. Mixture 'A' is composed of __% water, with the remaining percentage being milk. Mixture 'B' c...
Relevant for Exams:
