Answer:825cm
Step-by-step explanation:550cm/2=275cm
275*3=825cm
Answer:
$3.05
Step-by-step explanation:
Backpack=$18.70
6 note books=x
Sales tax=6%
Total cost=$39.22
18.70+x+0.06(18.70+x)=39.22
18.70+x+1.122+0.06x=39.22
19.822+1.06x=39.22
1.06x=39.22-19.822
1.06x=19.398
x=19.398/1.06
=18.3
x=$18.3
6 books=$18.3
Each book cost=18.3/6
=$3.05
Answer:
36cm
Step-by-step explanation:
The scale is 3 to 1, so the poster size is 3 times larger than the actual thing.
Answer:
10
Step-by-step explanation:
Since 12 is closer to 10 than 20, the nearest ten is 10, which is the answer.
Answer:
15
Step-by-step explanation:
he can read 30 pages in 10 minutes, which means 15 pages in 5 minutes =15, 15 plus 30 = 45
30 pages in 10 minutes
15 pages in 5 minutes