Fill in the blanks.
At a gathering,
25 of the boys and
211 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 -
25=
35Fraction of the girls who remained
= 1 -
211 =
911Fraction 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 3, 9 and 1 = 9
3 x 35 x 3 of the boys =
9 x 111 x 1 of the girls =
1 x 92 x 9 of the adults
915 of the boys =
911 of the girls =
918 of the adults
Boys : Girls : Adults
15 : 11 : 18
(a)
Number of boys at first = 15 u
(b)
Number of girls at first = 11 u
(c)
Number of adults at first = 18 u
(d)
Number of people who remained
= 3 x 9 u
= 27 u
Answer(s): (a) 15; (b) 11; (c) 18; (d) 27