Question

CP = Rs 840 and gain% = 16 % ) % 3​

Answer 1

Answer:

Let the cost of one watch=x Rs.

Then cost of second watch=(840-x) Rs.

Then according to the question

16% of x=12% of (840-x)

⇒

100

16

×x=

100

12

×(840−x)

⇒

100

16x

=

100

12×840

−

100

12x

⇒

100

16x

+

100

12x

=

100

12×840

⇒28x=12×840

⇒x=

28

12×840

=360Rs.

Answer 2

Answer:

Let the cost of one watch=x Rs.

Then cost of second watch=(840-x) Rs.

Then according to the question

16% of x=12% of (840-x)

⇒

100

16

×x=

100

12

×(840−x)

⇒

100

16x

=

100

12×840

−

100

12x

⇒

100

16x

+

100

12x

=

100

12×840

⇒28x=12×840

⇒x=

28

12×840

=360Rs.

Hence ,cost of one watch=360 Rs

Cost of another watch=840-360=480 Rs