Question

if the cost of a dozen soaps is rupees 153.60 will be the cost of 15 such soaps

Answer 1

cost of dozen soap = ₹153.60
i.e. 12 soap = ₹153.60
i.e. 1 soap = ₹153.60/12

15 soaps = 153.60/12 ×15
cost of 15 such soaps= ₹192

Answer 2

Hey,
Here is your answer.
》》》》》》》》》》

☆ Cost of dozen (12) soaps = Rs.153.60
☆ By unitary method,
Cost of 1 soap = 153.60/12 = Rs.12.8
☆ Cost of 15 soaps = 15×12.8
= Rs.192

Hope it helps.