Question

At what
EXERCISE-9.1
Find the gain or loss percent when :
(i) CP
620 and SP = 713
(ii) CP = 675 and SP = 7630
Find the selling price when :
(i) CP = * 1650 and gain % = 4%
(ii) CP = 875 and loss % = 12%
Find the cost price when :
SP = 1596 and gain % = 12%
SP = * 34.40 and gain % = 71%
2
The cost price of 12 candles is equal to the selling price
percent.
If the selling price of 16 water bottles is equal to the co
find the gain percent earned by the dea​

Answer 1

Answer:

1) Given CP =RS 620.

SP=RS 713

gain =SP-CP= 713-620

gain = RS 93.

∴ gain % =  

cp

gain

​  

×100=  

620

93

​  

×100

gain % =  

62

930

​  

 = 15.

gain % = 15%

2) Let  SP of one candle be Rs.1

Then SP of 15 candles= Rs. 15

Hence, CP of 12 candles=Rs.15

And SP of 12 candles=Rs.12

Therefore loss = CP−SP = Rs.15−Rs.12= Rs.3

Let the selling price of each bottle be y.

Let the cost price of each bottle be x.

According to the question,

16y=17x

⟹  

x

y

​  

=  

16

17

​  

 

Gain %=(  

x

y

​  

−1)×100

⟹Gain %=(  

16

17

​  

−1)×100=6.25%

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Step-by-step explanation: