Fill in the blanks.
At a gathering,
717 of the boys and
49 of the girls and
27 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 -
717=
1017Fraction of the girls who remained
= 1 -
49 =
59Fraction of the adults who remained
= 1 -
27 =
57The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 10, 5 and 5 = 10
10 x 117 x 1 of the boys =
5 x 29 x 2 of the girls =
5 x 27 x 2 of the adults
1017 of the boys =
1018 of the girls =
1014 of the adults
Boys : Girls : Adults
17 : 18 : 14
(a)
Number of boys at first = 17 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 10 u
= 30 u
Answer(s): (a) 17; (b) 18; (c) 14; (d) 30