Fill in the blanks.
At a gathering,
37 of the boys and
79 of the girls and
34 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 -
37=
47Fraction of the girls who remained
= 1 -
79 =
29Fraction of the adults who remained
= 1 -
34 =
14The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 4, 2 and 1 = 4
4 x 17 x 1 of the boys =
2 x 29 x 2 of the girls =
1 x 44 x 4 of the adults
47 of the boys =
418 of the girls =
416 of the adults
Boys : Girls : Adults
7 : 18 : 16
(a)
Number of boys at first = 7 u
(b)
Number of girls at first = 18 u
(c)
Number of adults at first = 16 u
(d)
Number of people who remained
= 3 x 4 u
= 12 u
Answer(s): (a) 7; (b) 18; (c) 16; (d) 12