Fill in the blanks.
At a gathering,
111 of the boys and
12 of the girls and
13 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 -
111=
1011Fraction of the girls who remained
= 1 -
12 =
12Fraction of the adults who remained
= 1 -
13 =
23The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 10, 1 and 2 = 10
10 x 111 x 1 of the boys =
1 x 102 x 10 of the girls =
2 x 53 x 5 of the adults
1011 of the boys =
1020 of the girls =
1015 of the adults
Boys : Girls : Adults
11 : 20 : 15
(a)
Number of boys at first = 11 u
(b)
Number of girls at first = 20 u
(c)
Number of adults at first = 15 u
(d)
Number of people who remained
= 3 x 10 u
= 30 u
Answer(s): (a) 11; (b) 20; (c) 15; (d) 30