Question

There are 45 cookies in a box. 27 of them have raisins while the rest are plain. What is the

ratio of the number of plain cookies to that of raisin cookies in the box?​

Answer 1

Given - Total number of cookies : 45

Number of cookies containing raisins : 27

Find - Ratio of number of plain cookies to that of raisin cookies in the box.

Solution - Firstly we will find number of cookies without raisin or plain cookies : 45 - 27 = 18.

Now, ratio of number of plain cookies to that of raisin cookies in the box = 18:27

Ratio of number of plain cookies to that of raisin cookies in the bbo = 2:3.

Thus, the ratio of number of plain cookies to that of raisin cookies in the box is 2:3.

Answer 2

SOLUTION

GIVEN

• There are 45 cookies in a box.

• 27 of them have raisins while the rest are plain.

TO DETERMINE

The ratio of the number of plain cookies to that of raisin cookies in the box

CONCEPT TO BE IMPLEMENTED

Ratio :

Ratio means comparing of two quantities

The ratio of a number a to another number b ( where b # 0) is a fraction a/b and it is written a : b , the first term a is called antecedent and the second term is called consequent

EVALUATION

Here it is given that there are 45 cookies in a box.

27 of them have raisins while the rest are plain

Number of raisin cookies = 27

Number of plain cookies = 45 - 27 = 18

Hence the required ratio of the number of plain cookies to that of raisin cookies in the box

= 18 : 27

= 2 : 3

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