Fill in the blanks.
At a gathering,
35 of the girls and
12 of the boys and
27 of the adults left after 1 hour.
The number of girls and boys and adults who left were the same.
- Number of girls at first = _____ u
- Number of boys at first = _____ u
- Number of adults at first = _____ u
- Difference between the number of boys and girls = _____ u
(a)
Change fraction into units.
Make the numerators the same.
LCM of 3, 1 and 2 = 6
3 x 25 x 2 of the girls =
1 x 62 x 6 of the boys =
2 x 37 x 3 of the adults
610 of the girls =
612 of the boys =
621 of the adults
Girls : Boys : Adults
10 : 12 : 21
Number of girls = 10 u
(b)
Number of boys = 12 u
(c)
Number of adults = 21 u
(d)
Difference between the number of boys and girls
= 12 u - 10 u
= 2 u
Answer(s): (a) 10; (b) 12; (c) 21; (d) 2