Question

A plane is flying at a steady speed of 30000m/minute.

How long does it take to fly 2000m. Give your answer in seconds.
SHOW METHOD AND EXPLAIN

Answer 1

4 seconds

Explanation:

`(30,000)/(1) =\frac{2,000}x}`

The numerator is the distance and the denominator is the time.

I used cross multiplication, the numerator of one fraction times the denominator of the other.

`30,000*x=2,000*1\\30,000x=2,000`

divide both sides by 30,000 and simplify

`x=(2,000)/(30,000) \\x=(2)/(30)`

Then multiply the fractions by 2/2 (basically multiplying the numerator and the denominator each by 2)

`x=(4)/(60)`

Since the denominator is 60, the number of seconds in a minute, the numerator is the answer

I hope this makes sense ;-;