75,090 views
1 vote
1 vote
Graham drove 42 1/3 miles in 1 1/3 hours .how many miles did he drive in one hour

User Tilman Koester
by
2.7k points

1 Answer

23 votes
23 votes

Explanation:

42 1/3 miles per 1 1/3 hour.

42 1/3 = 127/3 miles.

1 1/3 = 4/3 hours.

to bring it back to 1 hour per the requested norm of miles per hour, we need to find the factor to multiply 4/3 with to get 1 :

4/3 × x = 1

4x = 3

x = 3/4

to keep the ratio value itself unchanged, we need to multiply also the numerator (top) of the ratio (or fraction) by 3/4.

127/3 × 3/4 = 127/4 = 124/4 + 3/4 =

= 31 3/4 =31.75 miles / hour

he drove 31.75 (or 31 3/4) miles in 1 hour.

User Kelli
by
3.0k points