Question

on the first day of a sales 11 analogue watches and 6 digital watches was sold for rupees 4330 on the second day of the sale 22 analogue watches and 5 digital watches but sold for rupees 7330 find the cost of ​

Answer 1

Answer:

cost = 4587

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Answer 2

11(x) + 6(y) = 4330. equation one

22(x) + 5(y) = 7330. equation second

two unknown variable and two equations, we can get x, y as follows

substract equation second by 2*(equation one) and we get.

-7*y = 7330 - 4330*2

y = (8660 - 7330) / 7

y = 1330/7 = 190

so put value of y in any equation, let's put it in first equation.

x = (4330 - 6*190) / 11

x = (4330 - 1230) / 11 = 3100/11.

here x is cost of analogous and y is cost of digital watch.