Answer:
I got x= 2.25
Step-by-step explanation:
Answer:
13.3 L of 5% salt solution and 11.7 L of 20% salt solution
Step-by-step explanation:
Let
x L = amount of 5% solution
y L = amount of 20% solution.
1. A chemistry teachers needs 25 liters of salt solution, then
2. A chemistry teachers needs 25 liters of a 12% salt solution, so there are
liters of salt.
Amount of salt in 5% solution liters
Amount of salt in 20% solution liters,
thus
3. Solve the system of two equations:
From the first equation,
Substitute it into the second equation:
We can Notice that the Sum of Rides and the Total Amount of bus money left in the wallet of Shawn is 50
Given the Number of rides is represented by x
The amount of bus money Shawn will have left by y
⇒ x + y = 50
1 ten = 10 ones
1 one = 1 one
40 ÷ 10 = 4
3 ÷ 1 = 3
SO,
to regroup 43 ones as tens and ones we will need
4 tens & 3 ones.
Hope I helped ya!!
Ok so Mr gals takes 7 hours and Mr Lee's takes 6.25 hours to mow and those added equal 13.25 so 63 divided by 4 equals 15.75 so if we take that and minus gal and Lee's lawn it takes 2.50 hours to mow Mr unknowns lawn