Advertisements
Advertisements
प्रश्न
Anupama takes 125 minutes in walking a distance of 100 metre. What distance would she cover in 315 minutes?
उत्तर
Let the distance travelled in 315 minutes be x km.
| Time (in minute) | 125 | 315 |
| Distance(in metre) | 100 | x |
\[\text{ If the distance travelled is more, the time needed to cover it will also be more . } \]
\[\text{ Therefore, it is a direct variation } . \]
\[\text{ We get: } \]
\[125: 315 = 100: x\]
\[ \Rightarrow \frac{125}{315} = \frac{100}{x}\]
\[\text{ Applying cross muliplication, we get: } \]
\[x = \frac{100 \times 315}{125}\]
\[ = 252\]
\[\text{ Thus, Anupama would cover 252 metre in 315 minutes } .\]
APPEARS IN
संबंधित प्रश्न
Complite the following table given that x varies directly as y .
| x | 4 | 9 | ... | ... | 3 | ... |
| y | 16 | ... | 48 | 36 | ... | 4 |
A and B can do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?
If the cost of 8 apples is ₹ 56 then the cost of 12 apples is _______
Both x and y are in direct proportion, then `1/x` and `1/y` are ______
The area of cultivated land and the crop harvested is a case of direct proportion.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Area of land and its cost.
A car travels a distance of 225 km in 25 litres of petrol. How many litres of petrol will be required to cover a distance of 540 kilometres by this car?
If 25 metres of cloth costs Rs 337.50, then what will be the length of the cloth bought for Rs 810?
There are 20 grams of protein in 75 grams of sauted fish. How many grams of protein is in 225 gm of that fish?
A water tank casts a shadow 21 m long. A tree of height 9.5 m casts a shadow 8 m long at the same time. The lengths of the shadows are directly proportional to their heights. Find the height of the tank.
