Answer:
x=3
y=-1
Step-by-step explanation:
x=4+y
by substitution it in equation 1
weget
(4+y)+y=2
4+2y=2
y=-1
x=3
Answer:
SP=Rs 800
Step-by-step explanation:
→As we have,
→Profit=SP-CP
Now,

Answer:
or 
Step-by-step explanation:

or 
Answer:
10 5/8
Step-by-step explanation: