Advertisements
Advertisements
Question
Both x and y vary directly with each other and when x is 10, y is 14, which of the following is not a possible pair of corresponding values of x and y?
Options
25 and 35
35 and 25
35 and 49
15 and 21
Advertisements
Solution
35 and 25
Explanation:
Both x and y vary directly with each other.
i.e. `x oo y`
If x = 10 and y = 14
So, `10 oo 14` or `5 oo 7`
This proportion is not follow in 35 and 25 pairs.
Hence, 35 and 25
APPEARS IN
RELATED QUESTIONS
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.
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.
The cost of 97 metre of cloth is Rs 242.50. What length of this can be purchased for Rs 302.50?
Working 8 hours a day, Ashu can copy a book in 18 days. How many hours a day should he work so as to finish the work in 12 days?
- How far will it travel in 20 minutes?
- Find the time required to cover a distance of 250 km.
The perimeter of a circle and its diameter vary ______ with each other.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Simple interest on a given sum and the rate of interest.
It is given that l varies directly as m. Write an equation which relates l and m.
The following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas.
| Litres of gas | 1 | 0.5 | 2 | 2.5 | 3 | 5 |
| Distance (km) | 15 | 7.5 | 30 | 37.5 | 45 | 75 |
Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of gas?
Kritika is following this recipe for bread. She realises her sister used most of sugar syrup for her breakfast. Kritika has only `1/6` cup of syrup, so she decides to make a small size of bread. How much of each ingredient shall she use?
Bread recipe
1 cup quick cooking oats
2 cups bread flour
`1/3` cup sugar syrup
1 tablespoon cooking oil
`1 1/3` cups water
3 tablespoons yeast
1 teaspoon salt.
