Fill in the blanks.
At a gathering,
1115 of the boys and
57 of the girls and
34 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 -
1115=
415Fraction of the girls who remained
= 1 -
57 =
27Fraction of the adults who remained
= 1 -
34 =
14The number of boys, girls and adults who remained is the same.
Make the numerators the same.
LCM of 4, 2 and 1 = 4
4 x 115 x 1 of the boys =
2 x 27 x 2 of the girls =
1 x 44 x 4 of the adults
415 of the boys =
414 of the girls =
416 of the adults
Boys : Girls : Adults
15 : 14 : 16
(a)
Number of boys at first = 15 u
(b)
Number of girls at first = 14 u
(c)
Number of adults at first = 16 u
(d)
Number of people who remained
= 3 x 4 u
= 12 u
Answer(s): (a) 15; (b) 14; (c) 16; (d) 12