Question

In Rohan's birthday party, 90% of his friends came and three friends did not come. Find
the total number of friends Rohan has.
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Answer 1

Answer:

15 friends Rohan has plZz follow me

Answer 2

in short

10% is 3

so 100% is 3*10 = 30

PROPER WAY

let the number of Rohan's friend be x

friends who came to party = 90% of x

= 9x/10

friends who did not come to party

= x - 9x/10

= (10x - 9x)/10

= x/10

as per question

x/10 = 3

x = 3*10

x = 30