Fill in the blanks.
At a gathering,
12 of the boys and
37 of the girls and
711 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 -
37 =
47Fraction of the adults who remained
= 1 -
711 =
411The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 4 and 4 = 4
1 x 42 x 4 of the boys =
4 x 17 x 1 of the girls =
4 x 111 x 1 of the adults
48 of the boys =
47 of the girls =
411 of the adults
Boys : Girls : Adults
8 : 7 : 11
(a)
Number of boys at first = 8 u
(b)
Number of girls at first = 7 u
(c)
Number of adults at first = 11 u
(d)
Number of people who remained
= 3 x 4 u
= 12 u
Answer(s): (a) 8; (b) 7; (c) 11; (d) 12