Question

I bought the pen for 0.20 .what will be the cost of buying 5pens

Answer 1

cost of one pen = 0.20
then, cost of 5 pens =0.20*5=1
HOPE IT HELPS YOU

Answer 2

0.20 IS THE COST OF 1 PEN.
SO 0.20*5 WILL BE THE COST OF 5 PENS.
THEN 0.20*5=1.00.
1 RUPEE IS THE COST OF 5 PENS