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Scorpion4ik [409]
3 years ago
12

Tricia and janine are roommates and leave houston on interstate 10 at the same time to visit their families for a long weekend.

tricia travels west and janine travels east. if tricia's average speed is 2 miles per hour faster than janine's, find the speed of each if they are 330 miles apart in 2 hours and 30 minutes.
Mathematics
1 answer:
KiRa [710]3 years ago
4 0
<span>T=Tricia's speed; J=Janine's speed=T-2 mph
 330mi/2.5hr=</span>132 mph<span> The combined speed of both is 132 mph
 T+J=132 mph
 T+T-2mph=132 mph
 2T=134 mph
 T=67 mph

</span><span> ANSWER 1: Tricia's speed was 67 miles per hour.
 J=T-2 mph=67 mph - 2 mph=65 mph
 ANSWER 2: Janine's speed was 65 miles per hour.
 
 CHECK:
 2.5hr(J)+2.5hr(T)=330 mi
 2.5hr(65 mph)+2.5 hr(67 mph)=330 mi
 162.5 mi+167.5 mi=310 mi
 310 mi=310 mi 
</span>
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