Fill in the blanks.
At a gathering,
1315 of the boys and
23 of the girls and
911 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 -
1315=
215Fraction of the girls who remained
= 1 -
23 =
13Fraction of the adults who remained
= 1 -
911 =
211The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 2, 1 and 2 = 2
2 x 115 x 1 of the boys =
1 x 23 x 2 of the girls =
2 x 111 x 1 of the adults
215 of the boys =
26 of the girls =
211 of the adults
Boys : Girls : Adults
15 : 6 : 11
(a)
Number of boys at first = 15 u
(b)
Number of girls at first = 6 u
(c)
Number of adults at first = 11 u
(d)
Number of people who remained
= 3 x 2 u
= 6 u
Answer(s): (a) 15; (b) 6; (c) 11; (d) 6