Fill in the blanks.
At a gathering,
12 of the boys and
411 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 -
12=
12Fraction of the girls who remained
= 1 -
411 =
711Fraction 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 1, 7 and 1 = 7
1 x 72 x 7 of the boys =
7 x 111 x 1 of the girls =
1 x 72 x 7 of the adults
714 of the boys =
711 of the girls =
714 of the adults
Boys : Girls : Adults
14 : 11 : 14
(a)
Number of boys at first = 14 u
(b)
Number of girls at first = 11 u
(c)
Number of adults at first = 14 u
(d)
Number of people who remained
= 3 x 7 u
= 21 u
Answer(s): (a) 14; (b) 11; (c) 14; (d) 21