Advertisements
Advertisements
प्रश्न
If the cost of 6 cans of juice in ₹ 210, then what will be the cost of 4 cans of juice?
Advertisements
उत्तर
Let the cost required be x
| Number of cans of juice | 6 | 4 |
| Cost in rupees | 210 | x |
As number of cans increases cost also increases.
∴ They are in direct proportion
∴ `(x_1)/(y_1) = (x_2)/(y_2)`
`6/210 = 4/x`
6 × x = 4 × 210
x = `(4 xx 210)/6`
x = 140
Cost of 4 cans of juice = 140
APPEARS IN
संबंधित प्रश्न
Complite the following table given that x varies directly as y .
| x | 5 | ... | 10 | 35 | 25 | ... |
| y | 8 | 12 | ... | ... | ... | 32 |
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?
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.
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be ______ hours.
When two quantities are related in such a manner that, if one increases, the other also increases, then they always vary directly.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The distance travelled by CNG bus and the amount of CNG used.
Pattern B consists of four tiles like pattern A. Write a proportion involving red dots and blue dots in pattern A and B. Are they in direct proportion? If yes, write the constant of proportion.
Many schools have a recommended students-teacher ratio as 35:1. Next year, school expects an increase in enrolment by 280 students. How many new teachers will they have to appoint to maintain the students-teacher ratio?
