Question

A student scores 73 out of 100 on a test. If the maximum score on the next test is also 100 points, what score does the student need to maintain at least an average of 78?

Answer 1

(73 +x)/2 = 78

Answer 2

Solve for x :)

Answer 3

\[\frac{ 73+x }{ 2} do you mean that?\]

Answer 4

\[\frac{ 73+x }{ 2 }= 78\] Yes, they are equivalent.

Answer 5

\[\frac{ 73+x }{ 2 }=78\]\[73x+2=78\times2\]\[73+x=156\]\[x=83\]

Answer 6

@EchaSetiaWijaya ahhh! that makes sense to me. i didn't understand it written in a fraction but I understand 73x + 2 = 78 x 2.

Answer 7

@baldymcgee6 @EchaSetiaWijaya thanks for your help!

Answer 8

you're welcome

Answer 9

sorry, for the second step this is the right on i mean 73 + x = 78 * 2