kitkat936321
kitkat936321 kitkat936321
  • 16-09-2021
  • Mathematics
contestada

2) How much PURE copper must be added to 50.255kg of an allow containing 12% copper
to raise the copper content to 21%

Respuesta :

Аноним Аноним
  • 16-09-2021

Answer:

let x=amt of pure copper to add:

12%*50+100%x=21%(50+x)

6+x=10.5+.21x

.79x=4.5

x=5.7

amt of pure copper to add: 5.7 kg

Step-by-step explanation:

Answer Link

Otras preguntas

What is the degree of the monomial (3x^2y)/5
Menstruation is triggered by a drop in the level(s) of
Danica is giving a speech to a group of people who are familiar with her topic. Which two elements of writing would be best suited to use with this audience? co
lance baked a pie,Justin ate 2/3 of the pie.and joey ate 1/4 how much is left?
Factor and solve this question
The reactions of the _______ take place in the stroma.
a motorboat travels 256km in 5 hourse going upstream. It travels 385 km going downstream in the same amount of time. What is the rate of the boat in still water
First right answer gets brain
how does cladistics help us understand phylogeny
The lengths of a certain species of fish were found to be normally distributed. The mean length is 79 cm with a standard deviation of 10 cm. In a school of 310