In 50 minutes, jeremy was able to drive 25 miles. at this rate how far could he drive in 1 1/2 hours?

50/25=.5
.5*90= 45 
45 miles in 1 1/2 hours

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)