Hey again!
The answer to your question is 10 meters.
We can solve this by multiplying 15 and 2/3, and you get 10
Hope it helps!
The answer to your question is a^32
3A+2B=20
2A+B=13 ➡×(-2)➡-4A-2B=-26
3A+2B-4A-2B=20-26
-A=-6 ➡A=6
2(6)+B=13➡B=1
0.7 is just 7 tenths which is literally 7/10.