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?
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
In 10 days, the earth picks up 2.6 × 108 pounds of dust from the atmosphere. How much dust will it pick up in 45 days?
In 15 days, the earth picks up 1.2 × 108 kg of dust from the atmosphere. In how many days it will pick up 4.8 × 108 kg of dust?
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?
Two taps A and B can fill an overhead tank in 10 hours and 15 hours respectively. Both the taps are opened for 4 hours and they B is turned off. How much time will A take to fill the remaining tank?
A car is travelling 48 km in one hour. The distance travelled by the car in 12 minutes is ______.
If the area occupied by 15 postal stamps is 60 cm2, then the area occupied by 120 such postal stamps will be ______.
When two quantities are related in such a manner that, if one increases, the other also increases, then they always vary directly.
l varies directly as m and l is equal to 5, when `m = 2/3`. Find l when `m = 16/3`.
The mass of an aluminum rod varies directly with its length. If a 16 cm long rod has a mass of 192 g, find the length of the rod whose mass is 105 g.
Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.
| Mixture C | Mixture D |
 |
 |
If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue shade?
