We know that
<span>applying a rule of three</span>
if <span>1 japanese yen -------------> equals 0.0079 euros
X </span> japanese yen--------------> 1 euro
x=[1 euro]*[1 japanese yen]/[0.0079 euros]------------> 126.58 japanese yen
the answer is
126.58 japanese yen
Jake spent a total of 70 cents.
b = black-and-white = 8 cents
c = color = 15 cents
70 = 8b + 15c
he made a total of 7 copies
b + c = 7
system of equation:
70 = 8b + 15c
b + c = 7
--------------------------
b + c = 7
b + c (-c) = 7 (-c)
b = 7 - c
plug in 7 - c for b
70 = 8(7 - c) + 15c
Distribute the 8 to both 7 and - c (distributive property)
70 = 56 - 8c + 15c
Simplify like terms
70 = 56 - 8c + 15c
70 = 56 + 7c
Isolate the c, do the opposite of PEMDAS: Subtract 56 from both sides
70 (-56) = 56 (-56) + 7c
14 = 7c
divide 7 from both sides to isolate the c
14 = 7c
14/7 = 7c/7
c = 14/7
c = 2
c = 2
---------------
Now that you know what c equals (c = 2), plug in 2 for c in one of the equations.
b + c = 7
c = 2
<em>b + (2) = 7
</em><em />Find b by isolating it. subtract 2 from both sides
b + 2 = 7
b + 2 (-2) = 7 (-2)
b = 7 - 2
b = 5
Jake made 5 black-and-white copies, and 2 color copies
hope this helps
He has 3/5 of his cards left because he had 62/105 of his cards and that simplified is 3/5
The sales tax for a item was $6.20 and it cost $310 before tax. Find the sales tax rate. Write your answer as a percentage.
The tax rate in this case is 0.02 applied on that good which amounts to $6.20.
<u>Explanation:</u>
In a tax rate, the tax rate is the proportion at which a business or individual is saddled. There are a few techniques used to introduce a duty rate: statutory, normal, negligible, and successful.
These rates can likewise be introduced utilizing various definitions applied to a duty base: comprehensive and restrictive.
Answer:
Step-by-step explanation:
Given: 
To find: c
Solution:
At 
:
(i)
At 
:
(ii)
At 
:
(iii)
On subtracting (i) and (ii),
(iv)
On subtracting (i) and (iii),
On subtracting (iv) and (v),
Put a=3 in (iv)
Put 
in (iii)
