<span>8-(-5)-4 (-7)
=8+5-4-7
=2</span>
The distance is 6 I think
Answer:
20 schools(D)
Step-by-step explanation:
Answer:
6 adults
Step-by-step explanation:
Let
x -----> the number of children
y ----> the number of adults
we know that
The ratio

so
using proportion
Find the value of y for x=(20-12)=8

therefore
6 adults