Question

In a box, the ratio of red marbles to blue marbles is 7 : 4. If the total number of marbles in the box is 22, find the number of blue marbles.

Answer 1

$\sf{\huge{\underline{\orange{Given :-}}}}$

• The ratio of red marbles to blue marbles is 7 : 4.

• The total number of marbles in the box is 22.

$\sf{\huge{\underline{\green{To\:Find :-}}}}$

• The number of blue marbles.

$\sf{\huge{\underline{ Solution :-}}}$

The ratio of red marbles to blue marbles is 7 : 4.

Let the red marble be 7x & blue marble 4x.

The total number of marbles in the box is 22.

➝ 7x + 4x = 22

➝ 11 x = 22

➝ x = 22/11

➝ x = 2

• The red marble = 7x = 7 × 2 = 14

• The blue marble = 4x = 4 × 2 = 8

The number of blue marbles is 8 .

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Answer 2

Qᴜᴇsᴛɪᴏɴ :-

In a box, the ratio of red marbles to blue marbles is 7 : 4. If the total number of marbles in the box is 22, find the number of blue marbles.

Aɴsᴡᴇʀ :-

The ratio of red marbles to blue marbles is 7 : 4.

Let the red marble be 7x & blue marble 4x.

The total number of marbles in the box is 22.

➝ 7x + 4x = 22

➝ 11 x = 22

➝ x = 22/11

➝ x = 2

The red marble = 7x = 7 × 2 = 14

The blue marble = 4x = 4 × 2 = 8

The number of blue marbles is 8 .