Fill in the blanks.
At a gathering,
710 of the boys and
34 of the girls and
811 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 -
710=
310Fraction of the girls who remained
= 1 -
34 =
14Fraction of the adults who remained
= 1 -
811 =
311The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 3, 1 and 3 = 3
3 x 110 x 1 of the boys =
1 x 34 x 3 of the girls =
3 x 111 x 1 of the adults
310 of the boys =
312 of the girls =
311 of the adults
Boys : Girls : Adults
10 : 12 : 11
(a)
Number of boys at first = 10 u
(b)
Number of girls at first = 12 u
(c)
Number of adults at first = 11 u
(d)
Number of people who remained
= 3 x 3 u
= 9 u
Answer(s): (a) 10; (b) 12; (c) 11; (d) 9