Question

An alloy contains 30% of zinc. How many
kilograms of the alloy will be required to obtain
12 kg of zinc?​

Answer 1

let the total amount of alloy = 100%

copper = 30%   

zinc = 40%

then Nickel = 100-(30+40)

                   = 100 - 70 = 30

the amount of nickel in the  alloy = 30/100 * 20= 6 kg

                             

                            also copper is = 30/100 * 20 =  6 Kg

                                        Zinc       = 40/100*20 =   8 kg      

mark me as brainliest please                 

 

Answer 2

Answer:

40kg

Step-by-step explanation:

this is the answers