Vector is a quantity having magnitude as well as direction
its important because these are best way to relate a relationship between speed acceleration velocity etc
and helps to understand how the world that is around u behave
so vectors are really important
hope it helps
40 is the answer
5 x8 =40
7/10 + 1/2
Find common denominator will be 10
7/10+ 1×5/2×5
7/10+5/10
Add numerators keeping same denominator
7+5/10
Simplify
12/10
Reduce fraction
6/5
