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4 years ago

Is 9.0 an irrational number

Mathematics

1 answer:

NeX [460]4 years ago

4 0

9.0, or 9 IS a rational number.

A rational number is any number that could be expressed as a fraction. For example, the integers p/q as long as q is not equal to zero. 9.0 = 9/1; they are both natural numbers so 9.0 is rational. We can write that 10=101 .

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Given info:-

A shop keeper offers a discount of 20% on all the articles at his shop and all makes a profit of 12%.

What is the CP of an article whose MP is Rs. 280 ?

Explanation:-

Given that

The Marked Price of an article (M) = Rs. 280

Discount on it = 20%

Discount (D) = MD/100

⇛ Discount = (280×20)/100

⇛ Discount = 28×2

⇛ Discount =56

Selling Price = Marked Price - Discount

⇛ Selling Price = 280-56

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We know that

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Formula:-

Discount (D) = MD/100

M = Marked Price

Selling Price = Marked Price - Discount
Cost Price = (100×SP)/(100+g)

SP = Selling Price

g = gain or profit

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