Fill in the blanks.
At a gathering,
1519 of the boys and
13 of the girls and
711 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 -
1519=
419Fraction of the girls who remained
= 1 -
13 =
23Fraction of the adults who remained
= 1 -
711 =
411The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 4, 2 and 4 = 4
4 x 119 x 1 of the boys =
2 x 23 x 2 of the girls =
4 x 111 x 1 of the adults
419 of the boys =
46 of the girls =
411 of the adults
Boys : Girls : Adults
19 : 6 : 11
(a)
Number of boys at first = 19 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 4 u
= 12 u
Answer(s): (a) 19; (b) 6; (c) 11; (d) 12