Advertisements
Advertisements
प्रश्न
The table, given below, shows the values of x and y, where x is proportional (directly proportional) to y.
| x | A | 24 | 15 |
| y | 12 | B | 20 |
The values of A and B are:
पर्याय
A = 16 and B = 18
A = 32 and B = 9
A = 9 and B = 32
A = 18 and B = 16
Advertisements
उत्तर
A = 9 and B = 32
Explanation:
Here x1 = A; x2 = 24; x3 = 15
y1 = 12; y2 = B; y3 = 20
Since x and y are directly proportional to each other.
∴ `x_1/y_1 = x_2/y_2 = x_3/y_3`
`\implies A/12 = 24/B = 15/20`
`\implies A = 15/20 xx 12`
= `3/4 xx 12`
= 9
And `B = (24 xx 20)/15`
= `(24 xx 4)/3`
= 32
APPEARS IN
संबंधित प्रश्न
What least number must be added to each of the numbers 6, 15, 20 and 43 to make them proportional?
Find the third proportional to `x/y + y/x` and `sqrt(x^2 + y^2)`
If u, v, w, and x are in continued proportion, then prove that (2u+3x) : (3u+4x) : : (2u3+3v3) : (3u3+4v3)
If a, b, c and dare in continued proportion, then prove that
ad (c2 + d2) = c3 (b + d)
If a, b, c, d are in continued proportion, prove that (b − c)2 + (c − a)2 + (d − b)2 = (d − a)2.
Determine if the following numbers are in proportion:
7, 42, 13, 78
Determine if the following numbers are in proportion:
33, 121, 9, 96
Find the value of x if 5 : 3 : : x : 6.
Find whether 12, 24, 18, 36 are in order that can be expressed as two ratios that are in proportion
If a, b, c and d are in proportion, the value of `(8a^2 - 5b^2)/(8c^2 - 5d^2)` is equal to ______.
