Let the height of the building be x meters.
Less lengthy shadow, Less in the height (Direct Proportion)
∴ 40.25 : 28.75 :: 17.5 : x ⇔ 40.25 × x = 28.75 × 17.5
2 × 2 = 4
4 × 2 = 8
8 × 2 = 16
16 × 2 = 32
The boy is the girl's brother.
The phrase "son of the daughter of the father of my uncle" refers to the girl's mother.
This making the boy her brother.
Two numbers are in the ratio 5:4 and their difference is 10 what is the larger number
let the numbers be 5x and 4x
5x - 4x = 10
x = 10
the numbers are 50 and 40
5x is the larger number
Sum of the ages of 3 friends =3×23= 69 years
Sum of the ages of 4 friends =4×23= 92 years
∴ Age of 4th friend = 92 years - 69 years = 23 years.
Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.
∴ (2x + 2) + 2x + x = 27
⇒ 5x = 25
⇒ x = 5.
Hence, B's age = 2x = 10 years.
2 * 2 = 4
3 * 3 = 9
4 * 4 = 16
5 * 5 = 25
6 * 6 = 36
Therefore, the series is 2, 4, 3, 9, 4, 16, 5, 25,36.
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ND11-12-2022