:) The cost price of 11 pencils is equal to the selling price of 10 pencils. Find the gain or loss per cent.

Step-by-step explanation:

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{ Since CP of 15 articles is equal to SP of 12 )

Here , SP > CP. So, He / she made a profit.

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Now , Finding the profit percentage :

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Hope I helped ! ♡

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1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

b

step-by-step explanation: