Answer:
1620
Step-by-step explanation:
You are going to multiply 180 times 9 in any method you want, and the answer will be 1620
- If you want to make it easier, first do this :
- Divide 180 to 100 and 80
- Then make 100 × 9 =900
- Then 80 × 9 = 720
- 900 + 720 = 1620!!
To get an equivalent fraction, multiply the fraction by a whole number. For example, you can do 2/3 times 2 to both sides which is 4/6.
Let
x-------------> liters of <span>10% alcohol solution
</span>y-------------> liters of 60% alcohol solution
we know that
x+y=50----------------------> x=50-y-----------------> equation 1
0.10x+0.60y=0.40*50----------> 0.10x+0.60y=20---------> equation 2
substitute 1 in 2
0.10*(50-y)+0.60y=20---------> 5-0.10y+0.60y=20
5+0.50y=20------------> 0.50y=15-----------------> y=30
x+y=50----------> x=50-30---------> x=20
the answer is
20 liters of 10% alcohol solution
30 liters of 60% alcohol solution
Answer:
The answer to your question is 1 my friend.
You need a graphing calculator or just use an app on your phone (Desmos is a good app to use). I show what to do in the photo below.