I have some analogue wrist watches and some digitalwristwatches. I am going to sell them at discount. 11 Analogue watches and 6 digital watches were sold on first day at Rs. 4330 and 22 Analogue watches and 5 digital watches were sold on second day at Rs. 7330. Find the selling price of wrist watch of each type.
Answers
Given : Sale of 1st day
Analogue watch = 11 Digital watch = 6 Received amount = ` 4330
Sale of the 2nd day
Analogue watch = 22 Digital watch = 5 Received amount = ` 7330
To Find : selling price of wrist watch of digital type.
Solution:
selling price of wrist watch of digital type. = X
selling price of wrist watch of analog type. = Y
Analogue watch = 11 Digital watch = 6 Received amount = ` 4330
=> 6X + 11Y = 4330 Eq1
Analogue watch = 22 Digital watch = 5 Received amount = ` 7330
=> 5X + 22Y = 7330 Eq2
2 * Eq1 - Eq2
=> 12X - 5X = 2 * 4330 - 7330
=> 7X = 1330
=> X = 190
selling price of wrist watch of digital type. = 190 Rs
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