Fill in the blanks.
At a gathering,
911 of the boys and
45 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 -
911=
211Fraction of the girls who remained
= 1 -
45 =
15Fraction 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 2, 1 and 2 = 2
2 x 111 x 1 of the boys =
1 x 25 x 2 of the girls =
2 x 117 x 1 of the adults
211 of the boys =
210 of the girls =
217 of the adults
Boys : Girls : Adults
11 : 10 : 17
(a)
Number of boys at first = 11 u
(b)
Number of girls at first = 10 u
(c)
Number of adults at first = 17 u
(d)
Number of people who remained
= 3 x 2 u
= 6 u
Answer(s): (a) 11; (b) 10; (c) 17; (d) 6