Fill in the blanks.
At a gathering,
710 of the boys and
12 of the girls and
1117 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 -
12 =
12Fraction of the adults who remained
= 1 -
1117 =
617The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 3, 1 and 6 = 6
3 x 210 x 2 of the boys =
1 x 62 x 6 of the girls =
6 x 117 x 1 of the adults
620 of the boys =
612 of the girls =
617 of the adults
Boys : Girls : Adults
20 : 12 : 17
(a)
Number of boys at first = 20 u
(b)
Number of girls at first = 12 u
(c)
Number of adults at first = 17 u
(d)
Number of people who remained
= 3 x 6 u
= 18 u
Answer(s): (a) 20; (b) 12; (c) 17; (d) 18