Question

Need help, quickly!

make r the subject of the formula p=10(q-3r)/r

Answer 1

Explanation:

p=10(q-3r)/r

Cross multiply

pr = 10(q-3r)

pr = 10q - 30r

Pr + 30r = 10q

r(p + 30) = 10q

r = 10q/(p + 30)