Fill in the blanks.
At a gathering,
919 of the boys and
38 of the girls and
12 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 -
919=
1019Fraction of the girls who remained
= 1 -
38 =
58Fraction of the adults who remained
= 1 -
12 =
12The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 10, 5 and 1 = 10
10 x 119 x 1 of the boys =
5 x 28 x 2 of the girls =
1 x 102 x 10 of the adults
1019 of the boys =
1016 of the girls =
1020 of the adults
Boys : Girls : Adults
19 : 16 : 20
(a)
Number of boys at first = 19 u
(b)
Number of girls at first = 16 u
(c)
Number of adults at first = 20 u
(d)
Number of people who remained
= 3 x 10 u
= 30 u
Answer(s): (a) 19; (b) 16; (c) 20; (d) 30