71p
50
72p
50p
2p
10p

0p+5p+1p=26p 10p+50p+20p=80p 2p+20p+5p=27p 1p+10p+20p=31p 2p+1p+20p=23p 50p+20p+2p=72p 5p+50p+10p=65p 1p+20p+50p=71p 10p+1p+50

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.