Advertisements
Advertisements
प्रश्न
If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be ______ hours.
उत्तर
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
संबंधित प्रश्न
Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the map?
The amount of extension in an elastic string varies directly as the weight hung on it. If a weight of 150 gm produces an extension of 2.9 cm, then what weight would produce an extension of 17.4 cm?
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
A cistern can be filled by one tap in 8 hours, and by another in 4 hours. How long will it take to fill the cistern if both taps are opened together?
If the cost of 6 cans of juice in ₹ 210, then what will be the cost of 4 cans of juice?
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Distance travelled by an auto-rickshaw and time taken.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Number of students in a hostel and consumption of food.
There are 20 grams of protein in 75 grams of sauted fish. How many grams of protein is in 225 gm of that fish?
Here is a keyboard of a harmonium: This pattern of keys is repeated on larger keyboard. How many black keys would you expect to find on a keyboard with 14 such patterns.
The students of Anju’s class sold posters to raise money. Anju wanted to create a ratio for finding the amount of money her class would make for different numbers of posters sold. Could Anju’s class raise exactly Rs 2,000? If so, how many posters would they need to sell? If not, why?
