Question

if x:3:5=12:9:y find x and y​

Answer 1

Answer:

X=12 and y=5. linear equation method

Answer 2

Values are $\bf \red{x = 4}$ and $\bf \green{y = 15}$.

Given:

• x:3:5= 12:9:y

To find:

• Find the value of x and y.

Solution:

Concept to be used:

• Convert ratios into fractions and solve for x and y.

Step 1:

Write the ratio in terms of fractions.

$\frac{x}{12} = \frac{3}{9} = \frac{5}{y}$

Take first two fractions.

$\frac{x}{12} = \frac{3}{9}$

or

$x = \frac{12 \times 3}{9}$

or

$\bf x = 4$

Step 2:

Take last two fractions.

$\frac{3}{9} = \frac{5}{y}$

or

$y = \frac{9 \times 5}{3}$

or

$\bf y = 15$

Thus,

Value of x and y are 4 and 15 respectively.

Learn more:

1) y varies directly as square root of x. When x = 16, y = 24. Find the constant of variation and equation of variation.

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