1.27 repeated is the answer
18 chocolate cakes were made. 40(3)= 120 cakes in total. 15%=.15 .15(120)= 18
Answer: 
Step-by-step explanation:
1 USD is equivalent to 1.35 AUD
Therefore, 80 USD is equivalent to

Maybe three units is the answer
Answer: The price of system at extreme electronics is $570 and the price of system at ultra electronics is $395.
Step-by-step explanation:
Let the price of the system at the ultra electronics be u
Let the price of the system at extreme electronics be e
According to question, we have

Now, using the substitution method, we will solve the above system of equations.

Now, put the value of u in the first equation :

Now, we put the value of u in the equation which is given by:

Hence, the price of system at extreme electronics is $570 and the price of system at ultra electronics is $395.