Fill in the blanks.
At a gathering,
1217 of the boys and
23 of the girls and
38 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 -
1217=
517Fraction of the girls who remained
= 1 -
23 =
13Fraction of the adults who remained
= 1 -
38 =
58The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 5, 1 and 5 = 5
5 x 117 x 1 of the boys =
1 x 53 x 5 of the girls =
5 x 18 x 1 of the adults
517 of the boys =
515 of the girls =
58 of the adults
Boys : Girls : Adults
17 : 15 : 8
(a)
Number of boys at first = 17 u
(b)
Number of girls at first = 15 u
(c)
Number of adults at first = 8 u
(d)
Number of people who remained
= 3 x 5 u
= 15 u
Answer(s): (a) 17; (b) 15; (c) 8; (d) 15