Fill in the blanks.
At a gathering,
23 of the boys and
811 of the girls and
1619 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 -
23=
13Fraction of the girls who remained
= 1 -
811 =
311Fraction of the adults who remained
= 1 -
1619 =
319The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 3 and 3 = 3
1 x 33 x 3 of the boys =
3 x 111 x 1 of the girls =
3 x 119 x 1 of the adults
39 of the boys =
311 of the girls =
319 of the adults
Boys : Girls : Adults
9 : 11 : 19
(a)
Number of boys at first = 9 u
(b)
Number of girls at first = 11 u
(c)
Number of adults at first = 19 u
(d)
Number of people who remained
= 3 x 3 u
= 9 u
Answer(s): (a) 9; (b) 11; (c) 19; (d) 9