Fill in the blanks.
At a gathering,
89 of the boys and
1315 of the girls and
56 of the adults left after 1 hour.
The number of boys, girls, and adults who remained were the same.
- Number of boys at first = _____ u
- Number of girls at first = _____ u
- Number of adults at first = _____ u
- Number of people who remained = _____ u
(a)
Change fraction into units.
Fraction of the boys who remained
= 1 -
89=
19Fraction of the girls who remained
= 1 -
1315 =
215Fraction of the adults who remained
= 1 -
56 =
16The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 2 and 1 = 2
1 x 29 x 2 of the boys =
2 x 115 x 1 of the girls =
1 x 26 x 2 of the adults
218 of the boys =
215 of the girls =
212 of the adults
Boys : Girls : Adults
18 : 15 : 12
(a)
Number of boys at first = 18 u
(b)
Number of girls at first = 15 u
(c)
Number of adults at first = 12 u
(d)
Number of people who remained
= 3 x 2 u
= 6 u
Answer(s): (a) 18; (b) 15; (c) 12; (d) 6