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(i) When you multiply a number by 6 and subtract 5 from the product, you get 7. Can you tell what the number is?

(i) When you multiply a number by 6 and subtract 5 from the product, you get 7. Can you tell what the number is?

(ii) What is that number one third of which added to 5  gives 8?

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(i) Let the number be n.

Then according to question, we have :

                        6n\ -\ 5\ =\ 7

or                                  6n\ =\ 7\ +\ 5\ =\ 12

or                                    n\ =\ 2

 

(ii) Let the number be x.

Then according to question, 

  \frac{x}{3}\ +\ 5\ =\ 8

  \frac{x}{3}\ =\ 8\ -\ 5\ =\ 3

 x\ =\ 9 

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