Fill in the blanks.
At a gathering,
12 of the boys and
27 of the girls and
23 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 -
27 =
57Fraction of the adults who remained
= 1 -
23 =
13The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 5 and 1 = 5
1 x 52 x 5 of the boys =
5 x 17 x 1 of the girls =
1 x 53 x 5 of the adults
510 of the boys =
57 of the girls =
515 of the adults
Boys : Girls : Adults
10 : 7 : 15
(a)
Number of boys at first = 10 u
(b)
Number of girls at first = 7 u
(c)
Number of adults at first = 15 u
(d)
Number of people who remained
= 3 x 5 u
= 15 u
Answer(s): (a) 10; (b) 7; (c) 15; (d) 15