Advertisements
Advertisements
Question
In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last if 20 more persons join the camp?
Advertisements
Solution
∵ For 300 persons flour is enough for 42 days.
∴ For 1 person’s flour enough = 300 × 42 = 1260 days.
Now, 20 more persons join the camp.
So, total persons = 300 + 20 = 320
∴ For 320 persons flour enough = `12600/320 = 3/8` days
APPEARS IN
RELATED QUESTIONS
A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of the base that need to be added.
| Parts of red pigment | 1 | 4 | 7 | 12 | 20 |
| parts of base | 8 | .... | .... | .... | .... |
A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours?
Explain the concept of direct variation.
A and B can do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?
Aasheesh can paint his doll in 20 minutes and his sister Chinki can do so in 25 minutes. They paint the doll together for five minutes. At this juncture they have a quarrel and Chinki withdraws from painting. In how many minutes will Aasheesh finish the painting of the remaining doll?
A postman can sort out 738 letters in 6 hours. How many letters can be sorted in 9 hours?
Every 3 months Tamilselvan deposits ₹ 5000 as savings in his bank account. In how many years he can save ₹ 1,50,000
If two quantities x and y vary directly with each other, then ______
If two quantities x and y vary directly with each other, then ______ of their corresponding values remains constant.
The table shows the time four elevators take to travel various distances. Find which elevator is fastest and which is slowest.
| Distance (m) | Time (sec.) | |
| Elevator- A | 435 | 29 |
| Elevator- B | 448 | 28 |
| Elevator- C | 130 | 10 |
| Elevator- D | 85 | 5 |
How much distance will be travelled by elevators B and C separately in 140 sec? Who travelled more and by how much?
