Fill in the blanks.
At a gathering,
67 of the girls and
12 of the boys and
311 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 3 = 6
6 x 17 x 1 of the girls =
1 x 62 x 6 of the boys =
3 x 211 x 2 of the adults
67 of the girls =
612 of the boys =
622 of the adults
Girls : Boys : Adults
7 : 12 : 22
Number of girls = 7 u
(b)
Number of boys = 12 u
(c)
Number of adults = 22 u
(d)
Difference between the number of boys and girls
= 12 u - 7 u
= 5 u
Answer(s): (a) 7; (b) 12; (c) 22; (d) 5