Answer:
600 boys
800 girls
Step-by-step explanation:
Ratio is 3:4
let total number of boys be x
3/4=x/1400-x
4x=3(1400-x)
4x=4200-3x
7x=4200
x=600
600 boys
1400-600 = 800 girls
Answer:
4.09 m
Step-by-step explanation:
Let the length of the shadow cast by a person be x m.
Answer:
the first and 3rd one
Step-by-step explanation:
36/12 = 3
so
24/(6x - 4) = 3
3(6x - 4) = 24
18x - 12 = 24
18x = 36
x = 2