Fill in the blanks.
At a gathering,
35 of the boys and
13 of the girls and
27 of the adults left after 1 hour.
The number of boys and girls and adults who left were the same.
- Number of boys at first = _____ u
- Number of girls at first = _____ u
- Number of adults at first = _____ u
- Difference between the number of girls and boys = _____ u
(a)
Change fraction into units.
Make the numerators the same.
LCM of 3, 1 and 2 = 6
3 x 25 x 2 of the boys =
1 x 63 x 6 of the girls =
2 x 37 x 3 of the adults
610 of the boys =
618 of the girls =
621 of the adults
Boys : Girls : Adults
10 : 18 : 21
Number of boys = 10 u
(b)
Number of girls = 18 u
(c)
Number of adults = 21 u
(d)
Difference between the number of girls and boys
= 18 u - 10 u
= 8 u
Answer(s): (a) 10; (b) 18; (c) 21; (d) 8