Salaries of Rida and Riya are in the ratio of 3: 5, respectively. If the salary of each one is increased by Rs. 5,000, then the new ratio becomes 5 : 7. What is Riya's present salary ?
Answer & explanation
Correct answer: option 1
Rida : Riya
Original salaries 3 : 5
Increased salaries 5 : 7
↓ ↓
+5000 +5000
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Using cross - multiplication,
25R - 21R = (7 x 5000 - 5 x 5000)
⇒ 4R = 2 x 5000
⇒ R = 2500
Riya's present salary = 5R = 5x 2500 = Rs. 12,500