Advertisements
Advertisements
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.
Advertisements
उत्तर
Let the length of the shadow of the other pole be x m.
1 m = 100 cm
The given information, in the form of a table, is as follows:
Given, length of shadow of 5 m 60 cm high vertical pole = 3 m 20 cm
We know that 5 m 60 cm = 5 × 100 + 60
= 500 + 60
= 560 cm
3 m 20 cm = 3 × 100 + 20
= 300 + 20
= 320 cm
Length of second pillar = 10 m 50 cm
= 10 × 100 + 50
= 1000 + 50
= 1050 cm
Let the length of the shadow of the pillar = x
ratio of both
Then `560/320 = 1050/x`
on multiplying thunderbolts
560 × x = 1050 × 320
`x = (1050×320)/560`
x = 600
Hence, length of shadow of the pillar = 600 cm = 6 m
APPEARS IN
संबंधित प्रश्न
If the cost of 93 m of a certain kind of plastic sheet is Rs 1395, then what would it cost to buy 105 m of such plastic sheet?
If 12 boys earn Rs 840 in 7 days, what will 15 boys earn in 6 days?
If 7 kg onions cost 140 rupees, how much must we pay for 12 kg onions?
The cost of 12 quintals of soyabean is 36,000 rupees. How much will 8 quintals cost?
If the cost of 6 cans of juice in ₹ 210, then what will be the cost of 4 cans of juice?
Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
When two quantities are related in such a manner that, if one increases, the other also increases, then they always vary directly.
From the following table, determine if x and y are in direct proportion or not.
| x | 3 | 6 | 15 | 20 | 30 |
| y | 12 | 24 | 45 | 60 | 120 |
A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in `2 2/3` hours?
30 persons can reap a field in 17 days. How many more persons should be engaged to reap the same field in 10 days?
