Problems on Time and Work - III - Grade 8 - Mathematics - kwizNET Math/Science/English Homeschool/Afterschool/Tutoring Lessons/Worksheets/Quizzes/Trivia

Grade 8 - Mathematics 9.10 Problems on Time and Work - III

Directions: Solve the following problems. Also write at least 5 examples of your own.

Q 1: A can do a piece of work in 8 1/2 days. A works for 2 days B joins A. They work for one day, the capacity of B is double the capacity of A. On the 4th day the work is completed by A and B with the help of a boy. In how many days the boy can do the work. 15 days 18 days 17 days 16 days

Q 2: 8 men and 12 women can do a piece of work in 9 days. 10 men and 20 women can do the same work in 6 days. How long will 5 men and 15 women take to do it. 10 days 13 days 9 days 11 days

Q 3: 12 men and 8 women can do a piece of work in 16 days. 13 men and 4 women can do it in 18 days. How long will 3 men and 12 women take to do it. 24 days 22 days 25 days 23 days

Q 4: 10 men and 15 women can do a piece of work in 6 days. 12 men and 27 women can do the same work in 4 days. How long will 6 men and 11 women take to do it. 9 days 8 days 10 days 11 days

Q 5: 8 men and 14 women can do a piece of work in 8 days. 10 men and 20 women can do the same work in 6 days. How long will 3 men and 11 women take to do it. 16 days 17 days 18 days 15 days

Q 6: Harry can construct 2/3 of a wall in 40 days. Eric can construct 1/2 of the wall in 75 days. Adam can construct 3/4 of the wall in 75 days. If all the three work together, in how many days will they construct 5/6 of the wall. 20 days 22 days 23 days 25 days

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Question 8: This question is available to subscribers only!