SBI PO Prelims Model Paper 13

The respective ratio between the present age of Aarti and Savita is 5 : x. Aarti is 9 years younger than Jahnavi. Jahnavi's age after 9years will be 33 years. The difference between Savita's and Aarti's age is same as the present age of Jahnavi. What will come in placeof x?