Fill in the blanks.
At a gathering,
35 of the boys and
15 of the girls and
513 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 -
35=
25Fraction of the girls who remained
= 1 -
15 =
45Fraction of the adults who remained
= 1 -
513 =
813The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 2, 4 and 8 = 8
2 x 45 x 4 of the boys =
4 x 25 x 2 of the girls =
8 x 113 x 1 of the adults
820 of the boys =
810 of the girls =
813 of the adults
Boys : Girls : Adults
20 : 10 : 13
(a)
Number of boys at first = 20 u
(b)
Number of girls at first = 10 u
(c)
Number of adults at first = 13 u
(d)
Number of people who remained
= 3 x 8 u
= 24 u
Answer(s): (a) 20; (b) 10; (c) 13; (d) 24