A clothing manufacterer purchased 60 metres of cotton and 90 metres of wool for a total cost of $1800. Another purchase, at the same prices, included 80 metres of cotton and 20 metres of wool for a total cost of $1000. Find the cost per metre of the cotton and the wool.

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!

answer: b

step-by-step explanation: