Answer:
3/4 hour
Step-by-step explanation:
subtract
a) 13/20
b) 1/2
c) 5/24
d) 7/18
e) 7/20
f) 3/40
Add or subtract
a) 4/9
c) 11/20
d) 1/4
e) 19/12 <u>or </u>1
f) 4/21
12m/s
96/8 = 12
Step 1
Step one is incorrect because you need to add 3 but it subtracted.