a studnt bought some pens at rs 8 and some pencils at rs 1.5 if the total no.of pens and pencils bought is 16 at rs 50 then find the no. of pens he bought
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let no. of pens=x
no. of pencils=16-x
now,8x+1.5(16-x)=50
8x+24-1.5x=50
6.5x=26
x=26/6.5=260/65=20/5=4
no. of pens is 4
no. of pencils=16-x
now,8x+1.5(16-x)=50
8x+24-1.5x=50
6.5x=26
x=26/6.5=260/65=20/5=4
no. of pens is 4
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