Fill in the blanks.
At a gathering,
1317 of the boys and
57 of the girls and
79 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 -
1317=
417Fraction of the girls who remained
= 1 -
57 =
27Fraction of the adults who remained
= 1 -
79 =
29The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 4, 2 and 2 = 4
4 x 117 x 1 of the boys =
2 x 27 x 2 of the girls =
2 x 29 x 2 of the adults
417 of the boys =
414 of the girls =
418 of the adults
Boys : Girls : Adults
17 : 14 : 18
(a)
Number of boys at first = 17 u
(b)
Number of girls at first = 14 u
(c)
Number of adults at first = 18 u
(d)
Number of people who remained
= 3 x 4 u
= 12 u
Answer(s): (a) 17; (b) 14; (c) 18; (d) 12