Question

if the selling price of 16 watches is equal to the cost price of 17 watches,find the gain or loss per cent.
please help me​

Answer 1

let the selling price of each watches be y.

let the cost price of each watches be x.

According to the question,

16y = 17x

⟹  x /y  =  17/16

Gain % = (17/16 - 1 )x  100 = 6.25%

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Answer 2

Answer:

Frequency -- the number of oscillation per second........

Time period.-- the time taken by A vibrating ( oscillating ) object to complete one vibration....

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