Question 955380
1770mi/3hours=590 mph The combined speed is 590mph
r=rate of slower plane; r+40mph=rate of faster plane
r+(r+40mph}=590mph Subtract 40mph from each side.
2r=550 Divide each side by 2.
r=275 ANSWER 1: The slower plane was traveling 275 miles per hour.
r+40mph=275mph+40mph=315 mph ANSWER 2: the faster plane was traveling 315 miles per hour.
CHECK:
{{{1770mi/275mph+315mph=3hours}}}
{{{1770mi/590mph=3hours}}}
{{{3hours=3hours}}}