AutoZone sells a regular car battery for R 700 and heavy-duty model for
R1 100. If it sold 40 batteries yesterday for a total of R34 000, how many of
each type battery were sold? What were the rand value sales of each type?
Let
x = # regular
y = # heavy-duty
add up the batteries and their cost.
x+y = 40
700x + 1100y = 34000
Now solve as usual, then you can answer the 2nd question