1. Which of the following ratios are equivalent to 6:8?
36/40
9:12
12 to 16
15/20
24:36
16 to 24
2. 8.3 m = _____ mm
0.083
0.0083
8,300
830
3.On a scale drawing, 1 millimeter equals 4 centimeters. If a line on the drawing is 45 millimeters, how many meters is it actually?
1,800 m
180 m
18 m
1.8 m
4. The ratio of boys to girls at a school is 12 to 13. If 300 students attend the school, how many are boys?
144
277
156
25
5.Which team has the best winning percentage?
6 wins, 4 losses
10 wins, 5 losses
20 wins, 16 losses
30 wins, 24 losses
4 Answers

1) The answer is 12 : 16 –> Divide by 2
–> 6 : 8
2) 1 meter = 1000 millimeters.
8.3 m = (8.3 * 1000) mm = 8300
3) 1 mm = 4cm
45 mm = x cm
45 * 4 = 180 cm —> 1 m = 100 cm
Divide –> 180/100 = 1.8 meters — Answer is D
4) Add both ratios –> 12 + 13 = 25
(12 / 25) * 300 = 144 boys — Answer is A.
5) Answer is B.

These are really basic you should learn them
Question 1 The ratio is 0.75.
6/8 = .75(given)
9/12 = .75
15/20 = .75
Q2
8300 mm, as there are 1000 mm in 1 meter
Q3
1mm = 4cm
Multiply X 45 to get 45mm
Multiply X 45 to get 180cm
180cm is 1.8 meters as there are 100cm in a meter
Q4
300 divide by 25(total number) multiplied by 12(number of boys)
= 144
Q5
6/4 =1.5
10/5 = 2
20/16 =1.25
30/24 = 1.25
Therefore 10/5 has the best winning percentage of 200% victory rate or 2:1

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I hope you actually take the time to learn how to do these. You could have figured it out way way way faster than it takes to type that on here. Even if it was copy paste you should be able to answer all these questions within about 45 seconds. If you take your time.