Question

What score does jane need to receive an 85% average if she has an 32,90,92,82,64

Answer 1

(32 + 90 + 92 + 82 + 64 + x) / 6 = 85
(360 + x) / 6 = 85
360 + x = 85 * 6
360 + x = 510
x = 510 - 360
x = 150 <===

Answer 2

(P+32+90+92+82+64)÷6 = 85
P + 360 = 85*6
P + 360 = 510
P = 510 - 360
P = 150