Advertisements
Advertisements
प्रश्न
A photograph of a bacteria enlarged 50,000 times attains a length of 5 cm as shown in the diagram. What is the actual length of the bacteria? If the photograph is enlarged 20,000 times only, what would be its enlarged length?
Advertisements
उत्तर
Let the photograph of the bacteria be magnified 20,000 times, then the magnified length = x, ratio of the both
The given information, in the form of a table, is as follows:
Therefore, we obtain
Then 550000 = `x/(20,000)`
on multiplying thunderbolts
| Length of bacteria (in cm) | 5 | x |
| Bacteria enlarged | 50,000 | 20,000 |
50000 × x = 20000 × 5
`x = (20,000 × 5)/(50,000)`
x = 2
Hence, magnified length of bacteria = 2 cm
संबंधित प्रश्न
Anupama takes 125 minutes in walking a distance of 100 metre. What distance would she cover in 315 minutes?
A car is travelling at the average speed of 50 km/hr. How much distance would it travel in 12 minutes?
In which of the following case, do the quantities vary directly with each other?
Meenakshee cycles to her school at an average speed of 12 km/h and takes 20 minutes to reach her school. If she wants to reach her school in 12 minutes, her average speed should be ______.
If two quantities x and y vary directly with each other, then ______
In direct proportion, `a_1/b_1` ______ `a_2/b_2`
Two quantities x and y are said to vary directly with each other if for some rational number k, xy = k.
If 25 metres of cloth costs Rs 337.50, then what will be the length of the cloth bought for Rs 810?
Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.
| Mixture G | Mixture H |
 |
 |
If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue shade?
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.
