At the beginning of her mathematics class, Mrs. Reno gives a warm up problem. She says, " I am thinking of a number such that 6 less than the product of 7 and this number is 85." which number is she thinking of?

A. 11 2/7
B. 13
C. 84
D. 637

Respuesta :

The number Mrs. Reno is thinking of is 13

The mystery number is such that when it is multiplied by 7 and then this product is reduced by 6, the result would be 85.

Assume that number is x, the number would be:

(7 × x) - 6 = 85

7x - 6 = 85

7x = 85 + 6

7x = 91

x = 97/7

x = 13

Mrs. Reno is therefore thinking about 13

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