Fill in the blanks.
At a gathering,
67 of the girls and
13 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 6, 1 and 2 = 6
6 x 17 x 1 of the girls =
1 x 63 x 6 of the boys =
2 x 37 x 3 of the adults
67 of the girls =
618 of the boys =
621 of the adults
Girls : Boys : Adults
7 : 18 : 21
Number of girls = 7 u
(b)
Number of boys = 18 u
(c)
Number of adults = 21 u
(d)
Difference between the number of boys and girls
= 18 u - 7 u
= 11 u
Answer(s): (a) 7; (b) 18; (c) 21; (d) 11