Answer:
£12 per hour
Step-by-step explanation:
7 × 5 = 35 hours
35 h : 420
1 h : x
x = 420×1 / 35
= £12 per hour
x<1
still air = 815, wind = 40
x+y=against
x-y=with
8(x+y)=6200
8(x-y)=6840
Divide 8.
x-y=775
x+y=855
Subtract. 2 from 1
2y=80
y=40
x=815
Hope this helps plz hit the crown :D
This statement is sometimes true
