5 minutes, because 30 ÷ 6 = 5
I hope this helps you.
Answer:
10 litres of 1% solution and 8 litres of 10% solution
Step-by-step explanation:
Let vol of 1% solution = x
So vol of 10% solution = 18 - x
5% of 18 litres = 0.9
Equation formed is
<h3>x * (1/100) + (18 - x)*(10/100) = 0.9</h3>
x + (18 - x)10 = 0.9 * 100
x + 180 - 10x = 90
-9x = 90 - 180
-9x = -90
x = 10 litres
<h3>10 litres of 1% solution and 8 litres of 10%</h3>
Answer:
x+15
Step-by-step explanation:
X stands for the number of cards the one person represent add 15 to the whatever number of cards you have.
By this equation: d = 4(32), we know what d equals, which means we have the value of d.
d= 4*32
d = 128
