Fill in the blanks.
At a gathering,
25 of the boys and
45 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 -
25=
35Fraction of the girls who remained
= 1 -
45 =
15Fraction 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 3, 1 and 3 = 3
3 x 15 x 1 of the boys =
1 x 35 x 3 of the girls =
3 x 119 x 1 of the adults
35 of the boys =
315 of the girls =
319 of the adults
Boys : Girls : Adults
5 : 15 : 19
(a)
Number of boys at first = 5 u
(b)
Number of girls at first = 15 u
(c)
Number of adults at first = 19 u
(d)
Number of people who remained
= 3 x 3 u
= 9 u
Answer(s): (a) 5; (b) 15; (c) 19; (d) 9