Question

solve the following:
1. An article was sold for 250 with a profit of 5%. What was its cost price?
2. What should be subtracted from x(cube) – 4x(square) ─ 9 to get ─7x(cube) + x(square) ─ 4?

Answer 1

1.5/100÷×250=12.5
cost =250-12.5
=237.5
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Answer 2

Answer:

Cost Price is Rs.238.1

Step-by-step explanation:

SP = 250

profit = 5%

CP = ?

profit = (SP - CP)/CP

⇒ 5/100 = (250-CP)/CP

⇒0.05×CP = 250 - CP

⇒ 0.05CP + CP = 250

⇒1.05 CP = 250

⇒ CP = 250/1.05 = Rs. 238.1  

Cost Price is Rs.238.1

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