A ratio compares:
A) Two quantities of same units
B) Two quantities of different units only
C) Only whole numbers
D) Only fractions
A) Two quantities of same units
Which pair forms a proportion?
A. 2 : 3 and 6 : 9
B. 4 : 5 and 8 : 15
C. 7 : 8 and 21 : 25
D. 3 : 7 and 9 : 18
A. 2 : 3 and 6 : 9
If a : b = 3 : 5, then a/b is:
A) 5/3
B) 3/5
C) 8/2
D) 15
B) 3/5
If x : 12 = 5 : 3, then x = ?
A. 15
B. 18
C. 20
D. 24
C. 20
A ratio is always:
A) Addition
B) Division
C) Multiplication
D) Subtraction
B) Division
Which of the following ratios is equivalent to 3 : 5?
A. 9 : 12
B. 12 : 20
C. 15 : 20
D. 18 : 25
B. 12 : 20
Which of the following is NOT a ratio?
A) 3 : 4
B) 5 : 6
C) 7 : 0
D) 8 : 9
C) 7 : 0
Red and blue paint are mixed in ratio 2 : 3. If red paint is 18 litres, total mixture is:
A) 30 L
B) 40 L
C) 45 L
D) 50 L
C) 45 L
If a : b = 2 : 5, then b : a is:
A) 2 : 5
B) 5 : 2
C) 7 : 5
D) 1 : 2
B) 5 : 2
The ratio of cost of pens to he cost of pencils is 3 : 5. If there are 10 pencils, find the number of pens.
A) 4
B) 6
C) 8
D) 12
B) 6