Advertisements
Advertisements
Question
If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be ______ hours.
Solution
If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be 288 hours.
Explanation:
∵ 45 persons can complete a work in 20 days.
∴ 1 person can complete a work in 45 × 20 i.e. 900 days.
Similarly, 75 persons can complete the same work in `900/75` = 12 days
= 12 × 24 ...[∵ 1 day = 24 h]
= 288 h
APPEARS IN
RELATED QUESTIONS
Suneeta types 1080 words in one hour. What is her GWAM (gross words a minute rate)?
A woker is paid Rs 200 for 8 days work. If he works for 20 days, how much will he get?
Mohan takes 9 hours to mow a large lawn. He and Sohan together can mow it in 4 hours. How long will Sohan take to mow the lawn if he works alone?
A and B can do a piece of work in 6 days and 4 days respectively. A started the work; worked at it for 2 days and then was joined by B. Find the total time taken to complete the work.
If C = kd
(i) what is the relation between C and d?
(ii) find k when C = 30 and d = 6
(iii) find C, when d = 10
A car is travelling 48 km in one hour. The distance travelled by the car in 12 minutes is ______.
An auto rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4 km/h, the time taken by it to cover the same distance is ______.
Length of a side of a square and its area vary directly with each other.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Sales Tax and the amount of the bill.
Kritika is following this recipe for bread. She realises her sister used most of sugar syrup for her breakfast. Kritika has only `1/6` cup of syrup, so she decides to make a small size of bread. How much of each ingredient shall she use?
Bread recipe
1 cup quick cooking oats
2 cups bread flour
`1/3` cup sugar syrup
1 tablespoon cooking oil
`1 1/3` cups water
3 tablespoons yeast
1 teaspoon salt.
