Answer:
Explanation:
From the question, we are told that a pet shop sells guinea pigs and goldfish and that the ratio of guinea pigs to goldfish is 20:28.
a) Give this ratio in its simplest form.
The ratio of guinea pigs to goldfish is 20:28. The highest common factor to 20 and 28 is 4. Therefore 20 = 4 × 5 and 28 = 4 × 7. So, the ratio in its simplest form will be 5:7.
b. The shop has a total of 120 guinea pigs and fish. Work out the number of guinea pigs the shop has.
The ratio of guinea pig and goldfish is 5:7. If the shop has a total of 120 guinea pigs and fish, the number of guinea pigs the shop has will be:
= 5/12 × 120
= 5 × 10
= 50 guinea pigs
60. set up ratios 45/75 = x/100
4x - 2 = 2x - 10
First, subtract 2x from both sides. / Your problem should look like:
Second, subtract 4x - 2 - 2x to 2x - 2. / Your problem should look like:
Third, add 2 to both sides. / Your problem should look like:
Fourth, simplify -10 + 2 to get -8. / Your problem should look like:
Fifth, divide both sides by 2. / Your problem should look like:
Sixth, simplify

to 4. / Your problem should look like:

Answer:
x = -4
Solution:
we are given that
Nathan takes 42 minutes to thread a distance of 4.5 miles on a threadmill.
we have been asked to find the average distance covered in one minute.
Using the concept of unity we can write
Since Nathan takes 42 minutes to cover a distance of 4.5 miles.
So in 1 minute Nathan will cover a distance of 
Hence avearge distance covered in one minute is 1.1 miles.
Here is the graphed part. Hope this helped!