Fill in the blanks.
The ratio of the number of women to the number of men in Class A is 6 : 5.
The ratio of the number of women to the number of men in Class B is 7 : 9.
The number of women is the same.
- Difference in the number of children in Class A and Class B = _____ u
- Difference in the number of men in Class A and Class B = _____ u
- Total number of women = _____ u
- Total number of men = _____ u
(a)
Class A |
Class B |
Women |
Men |
Women |
Men |
6 x 7 |
5 x 7 |
7 x 6 |
9 x 6 |
42 u |
35 u |
42 u |
54 u |
Change ratio into units.
The number of women in Class A and Class B is the same.
LCM of 6 and 7 = 42
Number of students in Class A
= 42 u + 35 u
= 77 u
Number of students in Class B
= 42 u + 54 u
= 96 u
Difference in the number of students in Class A and Class B
= 96 u - 77 u
= 19 u
(b)
Number of men in Class A = 35 u
Number of men in Class B = 54 u
Difference in the number of men in Class A and Class B
= 54 u - 35 u
= 19 u
(c)
Number of women in Class A = 42 uNumber of women in Class B = 42 u Total number of women = 42 u + 42 u= 84 u (d)
Total number of men in Class A and Class B
= 54 u + 35 u
= 89 u
Answer(s)
: (a) 19; (b) 19; (c) 84; (d) 89