Advertisements
Advertisements
प्रश्न
A birthday party is arranged in third floor of a hotel. 120 people take 8 trips in a lift to go to the party hall. If 12 trips were made how many people would have attended the party?
Advertisements
उत्तर
Let the number of people attended the party be x.
| Number of people | 120 | x |
| Number of tips | 8 | 12 |
As the number of trips increases, number of people also increases.
∴ They are in direct proportion.
`(x_1)/(y_1) = (x_2)/(y_2)`
`120/8 = x/12`
x = `(120 xx 12)/8`
= 180
180 people attend the party in 12 trips
APPEARS IN
संबंधित प्रश्न
A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time the length of the shadow cast by another pole 10 m 50 cm high.
Explain the concept of direct variation.
Fill in the blank in of the following so as to make the statement true:
Two quantities are said to vary......... with each other if they increase (decrease) together in such a way that the ratio of the corresponding values remains same.
Complite the following table given that x varies directly as y .
| x | 4 | 9 | ... | ... | 3 | ... |
| y | 16 | ... | 48 | 36 | ... | 4 |
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
If 7 m cloth costs ₹ 294, then the cost of 5 m of cloth is ________
A truck requires 108 liters of diesel for covering a distance of 594 km. How much diesel will be required to cover a distance of 1650 km?
When two quantities x and y are in ______ proportion or vary ______ they are written as `x oo y`.
It is given that l varies directly as m. Find the constant of proportion (k), when l is 6 then m is 18.
Ms. Anita has to drive from Jhareda to Ganwari. She measures a distance of 3.5 cm between these villages on the map. What is the actual distance between the villages if the map scale is 1 cm = 10 km?
