Advertisements
Advertisements
Question
A car is travelling at the average speed of 50 km/hr. How much distance would it travel in 12 minutes?
Advertisements
Solution
| Distance (in km) | 50 | x |
| Time (in minute) | 60 | 12 |
\[\text{ Therefore, it is a direct variation } . \]
\[50: x = 60: 12\]
\[ \Rightarrow \frac{50}{x} = \frac{60}{12}\]
\[ \text{ Applying cross muliplication, we get: } \]
\[x = \frac{50 \times 12}{60}\]
\[ = 10\]
\[\text{ Thus, the required distance will be 10 km } .\]
RELATED QUESTIONS
In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?
Suppose 2 kg of sugar contains 9 × 106 crystals.
How many sugar crystals are there in
- 5 kg of sugar?
- 1.2 kg of sugar?
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
If 25 men earn Rs 1000 in 10 days, how much will 15 men earn in 15 days?
If the cost of 8 apples is ₹ 56 then the cost of 12 apples is _______
A postman can sort out 738 letters in 6 hours. How many letters can be sorted in 9 hours?
Both x and y are in direct proportion, then `1/x` and `1/y` are ______.
If x and y are in direct proportion, then (x – 1) and (y – 1) are also in direct proportion.
It is given that l varies directly as m. Find l, when m is 33.
Here is a key board of a harmonium:
- Find the ratio of white keys to black keys on the keyboard.

- What is the ratio of black keys to all keys on the given keyboard.
- This pattern of keys is repeated on larger keyboard. How many black keys would you expect to find on a keyboard with 14 such patterns.
