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Posted by Vikram Kumar 3 years, 6 months ago
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Yogita Ingle 3 years, 6 months ago
1 score =20 years
Let the age be x.
Then, x+ 1/2x+3x3=4x20+7
⇒3/2x+9=80+7
⇒3/2 x=78
⇒x=78×2/3
⇒x=52
Therefore, the age is 52 years.
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Gangadhar Sahu 3 years, 7 months ago
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Meghna Thapar 3 years, 7 months ago
In mathematics, cross multiplication is a process where a variable in an equation is determined by cross multiplying two fractions or expressions. Cross multiplication can be applied also compare fractions by multiplying the numerator of each fraction by the other's denominator.
In mathematics, specifically in elementary arithmetic and elementary algebra, given an equation between two fractions or rational expressions, one can cross-multiply to simplify the equation or determine the value of a variable.
The method is also occasionally known as the "cross your heart" method because a heart can be drawn to remember which things to multiply together and the lines resemble a heart outline.
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Gaurav Seth 3 years, 9 months ago
(a) The unit sale prices of <i>x</i>, <i>y</i>, and <i>z </i>are respectively given as Rs 2.50, Rs 1.50, and Rs 1.00.
Consequently, the total revenue in market I can be represented in the form of a matrix as:
The total revenue in market II can be represented in the form of a matrix as:
Therefore, the total revenue in market I isRs 46000 and the same in market II isRs 53000.
(b) The unit cost prices of <i>x</i>, <i>y</i>, and <i>z </i>are respectively given as Rs 2.00, Rs 1.00, and 50 paise.
Consequently, the total cost prices of all the products in market I can be represented in the form of a matrix as:
Since the total revenue in market I isRs 46000, the gross profit in this marketis (Rs 46000 − Rs 31000) Rs 15000.
The total cost prices of all the products in market II can be represented in the form of a matrix as:
Since the total revenue in market II isRs 53000, the gross profit in this market is (Rs 53000 − Rs 36000) Rs 17000
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Aayushi Dwivedi 3 years, 3 months ago
11Thank You