Fill in the blanks.
At a gathering,
13 of the boys and
1319 of the girls and
1117 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 -
13=
23Fraction of the girls who remained
= 1 -
1319 =
619Fraction of the adults who remained
= 1 -
1117 =
617The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 2, 6 and 6 = 6
2 x 33 x 3 of the boys =
6 x 119 x 1 of the girls =
6 x 117 x 1 of the adults
69 of the boys =
619 of the girls =
617 of the adults
Boys : Girls : Adults
9 : 19 : 17
(a)
Number of boys at first = 9 u
(b)
Number of girls at first = 19 u
(c)
Number of adults at first = 17 u
(d)
Number of people who remained
= 3 x 6 u
= 18 u
Answer(s): (a) 9; (b) 19; (c) 17; (d) 18