Fill in the blanks.
At a gathering,
89 of the boys and
35 of the girls and
1315 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 -
35 =
25Fraction of the adults who remained
= 1 -
1315 =
215The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 2 and 2 = 2
1 x 29 x 2 of the boys =
2 x 15 x 1 of the girls =
2 x 115 x 1 of the adults
218 of the boys =
25 of the girls =
215 of the adults
Boys : Girls : Adults
18 : 5 : 15
(a)
Number of boys at first = 18 u
(b)
Number of girls at first = 5 u
(c)
Number of adults at first = 15 u
(d)
Number of people who remained
= 3 x 2 u
= 6 u
Answer(s): (a) 18; (b) 5; (c) 15; (d) 6