Q474
7 is added to a certain number; the sum is multiplied by 5 ; the product is divided by 9 and 3 is subtracted from the quotient. Thus, if the remainder left is 12, what was the original number ?
A.
20
AnswerB.
30
C.
40
D.
60
Answer: Option A
Solution
Answer: Option A
Solution:
Let the original number be x.Then,
- 3 = 12
⇒ = 15
⇒ 5x + 35 = 135
⇒ 5x = 100
⇒ x = 20