Answer:
A) 
Step-by-step explanation:




Answer:
5 4/7
(five and four sevenths)
Step-by-step explanation:
7 5/7 - 2 1/7
Subtract 2 from 7.
5 5/7 - 1/7
Subtract 1/7 from 5/7
5 4/7
Answer:


1 apple costs $1.2
1 pear costs $1
Step-by-step explanation:
Represent Apples with A and Pears with P
For the person in my front, the expression is:

For me, the expression is

Hence, the system of equation is:


Solving for the values of A and P.
Substract equation (2) from (1)



<em>Hence, 1 pear costs $1</em>
Substitute 1 for P in 






<em>Hence, 1 apple costs $1.2</em>
C. about 14 km
12km + 4km = 16km
30km - 16km = 14km