Question

Q.) In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient ?

1)
12

2)
0

3)
20

4)
13

Answer 1

let's take x as the dividend
x / 12 = 35
x = 35 x 12
  = 420

so now we got that the the dividend so now you can simply perform.

420/21 = 20

so option 3) is correct