Advertisements
Advertisements
Question
The cost of 12 quintals of soyabean is 36,000 rupees. How much will 8 quintals cost?
Solution
Let us suppose the cost of 8 quintals of soyabean is `x` rupees.
The number of soyabeans and their cost vary in direct proportion.
∴ `12/36,000=8/x`
⇒ x = `(8xx36,000)/12`
⇒ x = 24,000
Hence, the cost of 8 quintals of soyabean is 24,000 rupees.
RELATED QUESTIONS
A machine in a soft drink factory fills 840 bottles in six hours. How many bottles will it fill in five hours?
A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length?
Sita can finish typing a 100 page document in 9 hours. Mita in 6 hours and Rita in 12 hours. How long will they take to type a 100 page document if they work together?
A, B and C working together can do a piece of work in 8 hours. A alone can do it in 20 hours and B alone can do it in 24 hours. In how many hours will C alone do the same work?
A and B can do a piece of work in 18 days; B and C in 24 days and A and C in 36 days. In what time can they do it, all working together?
A cistern can be filled by a tap in 4 hours and emptied by an outlet pipe in 6 hours. How long will it take to fill the cistern if both the tap and the pipe are opened together?
A dozen bananas costs ₹ 20. What is the price of 48 bananas?
x and y are said to vary directly with each other if for some positive number k, ______ = k.
Length of a side of a square and its area vary directly with each other.
When two quantities are related in such a manner that, if one increases, the other also increases, then they always vary directly.
