Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • Amina thinks of a number and subtracts 5/2 from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?

Q.1 Amina thinks of a number and subtracts  \frac{5}{2 }  from it. She multiplies the result by 8. The result now obtained is 3 times the same number she thought of. What is the number?     

Answers (1)

best_answer

Let us assume that the number Amina thought was x.

As per the question,

                           \left ( x-\frac{5}{2} \right )\times8 = 3x

or                        8x - 20 = 3x

Transposing  3x to the LHS and -20 to the RHS, we get

                          8x - 3x = 20 

or                          5x = 20

Dividing both sides by 5.

                            x = 4

 Therefore the number Amina thought was 4.

Posted by

Divya Prakash Singh

View full answer

Similar Questions

Latest Question