20 articles can bought for a certain sum of money when each article costs rs 0.81 . How many article can be bought from tha same sume when price rises to rs 0.90.....
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so, assuming 1 article is x
x=0.81
so,20 articles is 20x
total money =20*0.81=16.2 rs
no. of articles can be bought when x=0.9
=total money/x
=16.2/0.9
=162/9=18
therefore,18 articles can be bought when price rise to 0.9 rs
x=0.81
so,20 articles is 20x
total money =20*0.81=16.2 rs
no. of articles can be bought when x=0.9
=total money/x
=16.2/0.9
=162/9=18
therefore,18 articles can be bought when price rise to 0.9 rs
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0
Answer:
18
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