Answer:
The cost price was 3,000 rupees.
Step-by-step explanation:
A profit is an excess of the cost price you bought the bicycle at.
The original cost price as a decimal = 1.0
10% profit in excess of original cost as a decimal = 1+ 0.10 = 1.10
15% profit in excess of original cost as a decimal = 1+0.15= 1.15
And if he sold the bicycle at 150rupees more, he makes 15% profit;
The differential percentage = 15%-10% = 5% or 0.05
If 5% = 150 rupees
then 100% = (100*150)/5
= 15,000/5
= 3,000 rupees
<u>To verify;</u>
<em>At 15% profit it would be = 3000*1.15 =3,450 rupees</em>
<em>At 10% profit , it would be = 3000* 1.10 = 3,300 rupees</em>
<em>Difference = 3,450 -3,300 = 150 rupees</em>
Therefore, the cost price was 3,000 rupees.
