We let x = pounds of alloy that is 15% tin
The problem is modeled by the equation:
0.11(30) = 0.15x + 0.09(30-x)
The equation means that the amount of tin does not change. Also, the amount of alloy (total weight - weight of 15% alloy) is (30-x).
Solving for x:
3.3 = 0.15x +2.7 - 0.09x
.06x = 0.6
x = 10 lbs
30-10 = 20 lbs
<span>10 lbs. of the 15% alloy and 20 lbs. of the 9% alloy</span>
Hello!
So 1 meter is 3 feet. So if we have 5 meters, we then multiply 5×3 and your answer will be 15 feet.
I hope it helps!
Answer:
here = − x + 14
Step-by-step explanation:
Answer:
Ahmed has more toffees
Ben has more chocolates
Step-by-step explanation:
Ahmed:
60% = 3/5
3/5 x 30 = 18
therefore out of 30, 18 are toffees.
30 - 18 = 12
therefore 12 are chocolates
Ben:
3/8 x 40 = 15
therefore out of 40, 15 are toffees
40 - 15 = 25
therefore 25 are chocolates
By the way I am not sure!
2, 2 is the answer you should come up with
