Question

hey guys here is a question for you guys ♥♥♥

solve by using a proportion

1. you jog 3.6 miles in 30 minutes . at the rate , how long will it take you to jog 4.8 miles?

2. you earn $33 in 8hours . at the rate , how much would you earn in 5 hours

3. an airplane files 105 miles 1.2 hour . how far can it fly in 1.4 hours at the same rate of speed .

I want proper answers

Answer 1

$1) \\ 3.6miles = 30minutes \\ 1minute = \frac{5.79km}{30} = 0.193km \: per \: minute \\ \\ = 4.8miles = \frac{7.72}{0.193} = 40minute \\ \\ 2) \\ 33dollar = (8 \times 60) = 480minutes \\ in \: 1minute = \frac{33}{480} = 0.068dollar \: per \: minute \\ \\ in \: 5hours = (5 \times 60) \times 0.068 = 20.4dollar \\ \\ 3) \\ 105miles = (1.2 \times 60) = 72minutes \\ in \: 1 \: minute = \frac{105}{72} = 1.458miles \: per \: minute \\ in \: 1.4hours = (1.4 \times 60) \times 1.458 = 122.472miles$