أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
a. We are using less materials than expected but in total we are paying more than we should b. We are paying higher prices for our materials than expected c. We are paying less for our materials than expected but we are using more materials d. We are paying the same for our materials but we are using more than expected
