250-50 and x -20 are directly proportional when x -A- 100B- 50C- 25

The correct option is A 100If two variables A and B are directly related, then A_1/B_1 = A_2/B_2 where A_1 and A_2 are different values of A and nbsp;B_1 and ...

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Byju's Answer

Standard VIII

Mathematics

Addition and Subtraction of Algebraic Expressions

250/50 and x ...

Question

$\frac{250}{50}$ and $\frac{x}{20}$ are directly proportional when x = .

100

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Solution

The correct option is A 100
If two variables A and B are directly related, then
$\frac{A_{1}}{B_{1}}$ = $\frac{A_{2}}{B_{2}}$
where $A_{1}$ and $A_{2}$ are different values of A
and $B_{1}$ and $B_{2}$ are corresponding values of B.
$⟹ \frac{250}{50}$ = $\frac{x}{20}$
$⟹ \frac{250 \times 20}{50} = \frac{x}{1}$
$⟹ x = 100$

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25050 and x20 are directly proportional when x = .

The correct option is A 100If two variables A and B are directly related, then A1B1 = A2B2 where A1 and A2 are different values of A and B1 and B2 are corresponding values of B. ⟹25050 = x20 ⟹250×2050=x1 ⟹x=100

$\frac{250}{50}$ and $\frac{x}{20}$ are directly proportional when x = .