Fill in the blanks.
At a gathering,
12 of the boys and
25 of the girls and
110 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 -
25 =
35Fraction of the adults who remained
= 1 -
110 =
910The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 3 and 9 = 9
1 x 92 x 9 of the boys =
3 x 35 x 3 of the girls =
9 x 110 x 1 of the adults
918 of the boys =
915 of the girls =
910 of the adults
Boys : Girls : Adults
18 : 15 : 10
(a)
Number of boys at first = 18 u
(b)
Number of girls at first = 15 u
(c)
Number of adults at first = 10 u
(d)
Number of people who remained
= 3 x 9 u
= 27 u
Answer(s): (a) 18; (b) 15; (c) 10; (d) 27