Fill in the blanks.
At a gathering,
17 of the boys and
14 of the girls and
710 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 -
17=
67Fraction of the girls who remained
= 1 -
14 =
34Fraction of the adults who remained
= 1 -
710 =
310The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 6, 3 and 3 = 6
6 x 17 x 1 of the boys =
3 x 24 x 2 of the girls =
3 x 210 x 2 of the adults
67 of the boys =
68 of the girls =
620 of the adults
Boys : Girls : Adults
7 : 8 : 20
(a)
Number of boys at first = 7 u
(b)
Number of girls at first = 8 u
(c)
Number of adults at first = 20 u
(d)
Number of people who remained
= 3 x 6 u
= 18 u
Answer(s): (a) 7; (b) 8; (c) 20; (d) 18