Fill in the blanks.
At a gathering,
712 of the boys and
34 of the girls and
1419 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 -
712=
512Fraction of the girls who remained
= 1 -
34 =
14Fraction of the adults who remained
= 1 -
1419 =
519The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 5, 1 and 5 = 5
5 x 112 x 1 of the boys =
1 x 54 x 5 of the girls =
5 x 119 x 1 of the adults
512 of the boys =
520 of the girls =
519 of the adults
Boys : Girls : Adults
12 : 20 : 19
(a)
Number of boys at first = 12 u
(b)
Number of girls at first = 20 u
(c)
Number of adults at first = 19 u
(d)
Number of people who remained
= 3 x 5 u
= 15 u
Answer(s): (a) 12; (b) 20; (c) 19; (d) 15