Raju went to the stationery shop to buy some pens and pencils. He bought two times as many pens as pencils.He spent Rs 52 in all. If a pen costs Rs 12 and a pencil Rs 2, how many pens did he buy?
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Let no. of pencils ="X"
no. of pens. =2x
with respective to prices
the equation be like this
2x+12*2x=52
2x+24x=52
26x=52
'X'=2
2*X=2*2=4
therefore, no.of pencils=2
no.of pens =4
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