Question

Akhil's office in a high -rise building was on a floor that had as many floors above it as below.one day he went up 7 floors from his office ,then down 4 floors and finally up 9 floors.If he was at the top floor now,how many floors did the building have in all?

Answer 1

Answer:

25

Step-by-step explanation:

x floors above x floors below, his floor is x+1

moved 7 floors above so x+1+7=x+8

move 4 below so x+8-4=x+4

move 9 above x+4+9= x+13

total floors is x above + x below + 1 I. e 2x+1

so 2x+1= x+13, x=12