SOLUTION: an ore contains 20% zinc. how many kg of ore will be required to get 45 kg of zinc
Algebra.Com
Question 924050: an ore contains 20% zinc. how many kg of ore will be required to get 45 kg of zinc
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
ore contains 20% zinc.
need 45 kg of zinc.
x = amount of ore
equation is .2 * x = 45
divide both sides of this equation by .2 to get:
x = 45 / .2
solve for x to get x = 225
he needs 225 kg of ore to get 45 kg of zinc.
.2 * 225 = 45
RELATED QUESTIONS
An ore contains 30% copper. How many kilograms of the ore will be required to obtain 12... (answered by lwsshak3)
60 kg of an alloy of zinc and aluminium contains 80% of zinc. How much zinc must be... (answered by richwmiller)
a lot of brass scrap weighing 350 kg contains 30% zinc. how many kg of zinc must be added (answered by ankor@dixie-net.com)
Two metal alloys, containing 6% zinc and 16% zinc are to be mixed together. How much of... (answered by ikleyn,greenestamps,josgarithmetic)
How many kilograms of nickel silver containing 15% zinc and how many kilograms of nickel... (answered by josgarithmetic,ikleyn)
If an alloy is 20% zinc and 80% copper, how many grams of each will be required to make... (answered by hamsanash1981@gmail.com)
How many kg of ore containing 5% gold must be melted down with 8kg of 2% gold to produce... (answered by mananth)
How many kilograms of nickel silver containing 15% zinc and how many kilograms of nickel... (answered by Alan3354)
An ore contains 18% of iron.how many tons of ore to the nearest 10 tons will yield 25... (answered by jorel555)