Fill in the blanks.
At a gathering,
89 of the boys and
12 of the girls and
49 of the adults left after 1 hour.
The number of boys and girls and adults who left were the same.
- Number of boys at first = _____ u
- Number of girls at first = _____ u
- Number of adults at first = _____ u
- Difference between the number of girls and boys = _____ u
(a)
Change fraction into units.
Make the numerators the same.
LCM of 8, 1 and 4 = 8
8 x 19 x 1 of the boys =
1 x 82 x 8 of the girls =
4 x 29 x 2 of the adults
89 of the boys =
816 of the girls =
818 of the adults
Boys : Girls : Adults
9 : 16 : 18
Number of boys = 9 u
(b)
Number of girls = 16 u
(c)
Number of adults = 18 u
(d)
Difference between the number of girls and boys
= 16 u - 9 u
= 7 u
Answer(s): (a) 9; (b) 16; (c) 18; (d) 7