Fill in the blanks.
At a gathering,
78 of the boys and
1517 of the girls and
1517 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 -
78=
18Fraction of the girls who remained
= 1 -
1517 =
217Fraction of the adults who remained
= 1 -
1517 =
217The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 1, 2 and 2 = 2
1 x 28 x 2 of the boys =
2 x 117 x 1 of the girls =
2 x 117 x 1 of the adults
216 of the boys =
217 of the girls =
217 of the adults
Boys : Girls : Adults
16 : 17 : 17
(a)
Number of boys at first = 16 u
(b)
Number of girls at first = 17 u
(c)
Number of adults at first = 17 u
(d)
Number of people who remained
= 3 x 2 u
= 6 u
Answer(s): (a) 16; (b) 17; (c) 17; (d) 6