Mixture question please help!! (will give brainliest to an answer with step-by-step)

For thousands of years, gold has been considered one of the Earth's most precious metals. One hundred percent pure gold is 24-karat gold, which is too soft to be made into jewelry. Most gold jewelry is 14-karat gold, approximately 58% gold. If 18-karat gold is 75% gold and 12-karat gold is 50% gold, how much of each should be used to make a 14-karat gold bracelet weighing 250 grams?

83.3 g of 18-karat gold and 166.7 g of 12-karat gold

Step-by-step explanation:

24-karat gold is pure gold. The purity is 24/24 = 1 = 100% gold.

12-karat gold is 50% gold. The purity is 12/24 = 0.5 = 50% gold.

14-karat gold is 14/24 pure, so in 250 g of 14-karat gold the amount of pure gold is

14/24 * 250 g

The total weight of the bracelet is 250 g.

Let x = the weight of 18-karat gold.

Then the weight of 14-karat gold needed is 250 - x.

weight of pure gold from 14-karat gold + weight of pure gold from 18-karat gold = weight of pure gold in 14-karat gold bracelet

0.5 * (250 - x) + 0.75x = 14/24 * 250

125 - 0.5x + 0.75x = 7/12 * 250

125 + 0.25x = 7/12 * 250

1500 + 3x = 1750

3x = 250

x = 250/3

x = 83.3

250 - x = 250 - 83.3 = 166.7

83.3 g of 18-karat gold and 166.7 g of 12-karat gold

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.

christopher is 272,195 year old

step-by-step explanation: