The ratio of prices of coffee and tea is 5 : 7 and the ratio of their quantities consumed by a family is 7 : 9. Find the ratio of expenditures on coffee and tea.
Show answer & explanation
Correct answer: D
Explanation
The Correct answer is option 4 i.e 5 : 9.
Price ratio (Coffee : Tea) = 5 : 7
Quantity ratio (Coffee : Tea) = 7 : 9
Step: Expenditure = Price × Quantity
So, the ratio of expenditures:
⇒ (5 × 7) : (7 × 9) = 35 : 63
Now;
35 : 63 = 5 : 9