Sam and Sara bought the same number of pencils. Sam put ¼ of his pencils in his pencil box and Sara put ½ of her pencils in her pencil box. If sam had put 5 in his box then how many pencils did sara put in her pencil box?

10 pencils

Step-by-step explanation:

Given that:

Number of pencils bought by Sam and Sara are the same.

Let the number of pencils bought = x

Sam put 1/4 in his pencil box

Sara put 1/2 in her pencil box

1/4 of Sam's pencil = 5

That is ;

1/4 of x = 5

x /4 = 5

x = 20

Hence, number of pencils Sara put in her box

:

1/2 of 20

1/2 * 20

20/2

= 10

10 pencils

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.