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Answer:
a)300 pencils and b)533/534pencils.
Step-by-step explanation:
Given,1pen=2rupees profit
and 1pencil=30 paise of loss.
so,a)
total loss 10 Rs,
number of pens he sold 40pens.
1pen=2Rs profit,
Therefore,40pens X 2 (its profit)=80Rs
he earns 80Rs,
total loss + total earn
80+10=90Rs
1Rs=100paise
so 90 X 100 = 9000paise
9000paise=300pencils.
b)
no. of pens he sold=80pens
80pens X 2profit= 160Rs
and 160 Rs= 16000paise
16000paise divided by 1 pencil of loss
16000 / 30= 533.4
ans = 533 pencils or 534 pencils.