Answer:
86 x 12 + P = 1,150
Step-by-step explanation:
The office manager bought 86 boxes, which each have 12 reams of paper inside, so the total number of reams of paper in the 86 boxes is 86 x 12 (86 boxes of 12 reams of paper).
86 x 12 = 1,032, so we know we haven't got enough reams yet, because 1,032 is less than 1,150.
'P' represents the number of reams of paper we still need to reach 1,150.
Therefore, if we add P reams to 1,032 reams, we will have 1,150 reams.
