Answer:
- 12.5 ounces of 12% alloy
- 37.5 ounces of 24% alloy
Step-by-step explanation:
Let x represent the amount (in ounces) of 24% alloy in the mix. Then the amount of 12% alloy is (50 -x). The amount of silver in the mix is ...
24%·x + 12%·(50 -x) = 21%·50
12x = 450 . . . . . . simplify, multiply by 100 (to eliminate %), and subtract 600
x = 37.5 . . . . . . . divide by 12
The jeweler needs to mix 37.5 ounces of 24% silver alloy with 12.5 ounces of 12% silver alloy to make 50 ounces of 21% silver alloy.
Step-by-step explanation:
A= 1000(1+6/100x5)=1300 then 1000-1300=-300
Answer:
€2.24
Step-by-step explanation:
Let, the potatoes be x and apples be y
A/c to question,
4x = 3.80
x = 0.95
And,
3x + 2y = 7.33
3*0.95 + 2y = 7.33
2y = 7.33 - 2.85
y = 4.48/2
y = €2.24
Hence, the cost of 1 kg apple (y) = €2.24
Answer: -40
Multiply 2 by 4.
8+4•3-30•2
Multiply 4 by 3
8+12-30•2
Multiply-30 by 2
8+12-60
Simplify by adding and subtracting:
Add 8 and 12
20-60
Subtract 60 from 20
-40
1. Irrational
2. Additive inverse
3. Like terms
4. Absolute value
5. Inductive reasoning