Question

21. If the price of gold increases by 50%, find by how much the quantity of ornaments must be reduced, so that the expenditure may remain the same as before? (a) 277% a (b) 33% 3 23 (c) 30% (d) 19%​

Answer 1

Answer:

Step-by-step explanation:

Let expenditure be x when price is y

Quantity=x/y

Now increase in price=30%

y(130/100)=13y/10

Now,x/(13y/10)=x/y

10x/13y=x/y

Reduction=1–10/13=3/10=.3=30%