Answer:
4 liters of 5% and 16 liters of 17.5%
Step-by-step explanation:
Let quantity of 5% be x liters and of 17.5% be y liters
x+y=20 hence y=20-x
Introducing percentages
0.05x+0.175(20-x)=0.15*20
0.05x+3.5-0.175x=3
-0.125x=-0.5
Therefore, y=20-x=20-4=16
You need 4 liters of 5% and 16 liters of 17.5% to achieve 20 liters of 15% acid solution
Answer:
c
Step-by-step explanation:
Since 19 is 76% of 25, we can assume that 76% of the people in the restaurant like the new menu. 76% of 227 is roughly 173. So about 173 people liked the menu that day. Hope this helps :)
Since it is given that one hole = 0,79m^2
0,79=3,142 x radius^2
radius^2=3,142 Divided by 0,79
radius=Square Root of 3.97721512
radius=1.994295662
=1.99m^2 (3 Significant Figures)
Answer:
54.01
If it’s an less than problem then
49.01<54.01<100
Step-by-step explanation:
100-54.99
= 54.01