Answer:
Marked price is Rs. 53333.33 and the cost price is Rs. 42333.33.
Step-by-step explanation:
Let Rs. x and Rs. y are the cost price and marked price of the mobile set respectively.
Now, the man has a loss of Rs. 8000 after giving a 15% discount on the marked price.
Therefore, 15% of y is 8000 i.e.
⇒ y = Rs. 53333.33
Now, the man gained Rs. 3000 by selling the mobile set allowing 15% discount on the marked price.
Therefore, the mobile set has the cost price = x = Rs. [(53333.33 - 8000) - 3000] = Rs. 42333.33 (Answer)
Answer:
A) (4, 36)
Step-by-step explanation:
Substituting 4 into the equation gets y = 9(4), which is equal to 36.
Answer:

» Collect like terms, r terms on the left hand side by subtracting r from both sides and adding st to both sides

» On the left hand side, factorise out r

180 times .20 is 36 so 180 minus 36 is 144 so you get 144 in sterling.
Let the original amount be x so ,
according to question,
3x/5 + 1x/5 + 1200 = x
or, 1200 = x - 4x/5
or, 1200 = 1x/5
or, x = 6000