Question

In rohan's birthday party, 90% of his friends came and three friends did not came. Find the total number of friends Rohan has.​

Answer 1

30 how

Step-by-step explanation:

Given: At Rohan's birthday party, 90% of his friends came and 3 friends did not come. To find: We have to find the total number of friends Rohan has. Given that 90% of his friends came so 10% of his friends didn't come. So Rohan has total 30 friends.

Answer 2

ANSWER :-

30 friends

STEP BY STEP explanation :-

Given: At Rohan's birthday party, 90% of his friends came and 3 friends did not come.

To find: We have to find the total number of friends Rohan has.

Solution:

Let the total number of friends of Rohan = a

Given that 90% of his friends came so 10% of his friends didn't come.

10% of Rohan's friends =

$a \: \times \: \frac{10}{100}$

It is also given that number of his friends did not come is three. So,

$\frac{a}{10} \: = \: 3$

$a \: = \: 30$

So Rohan has total 30 friends.