Fill in the blanks.
At a gathering,
1120 of the boys and
12 of the girls and
514 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 -
1120=
920Fraction of the girls who remained
= 1 -
12 =
12Fraction of the adults who remained
= 1 -
514 =
914The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 9, 1 and 9 = 9
9 x 120 x 1 of the boys =
1 x 92 x 9 of the girls =
9 x 114 x 1 of the adults
920 of the boys =
918 of the girls =
914 of the adults
Boys : Girls : Adults
20 : 18 : 14
(a)
Number of boys at first = 20 u
(b)
Number of girls at first = 18 u
(c)
Number of adults at first = 14 u
(d)
Number of people who remained
= 3 x 9 u
= 27 u
Answer(s): (a) 20; (b) 18; (c) 14; (d) 27