Answer:
omg
Step-by-step explanation:
6.875 average.
To calculate the average you add up all of the numbers and divide it by the number of numbers there are, in this case there are 4 numbers. So you add 3.25+6.5+7.25+10.5 and divide that by 4
7/8 into a decimal is 0.875
hope it helps!!
Answer: 
Step-by-step explanation:
Given
Raju buy an old car for 
He spent
on its repair
The selling price of the car 
So, the cost price is

Here, 
Gain percent is

X = 9/2
i hope i have helped you out. simple math for me. :)