Question 1
The ratio of Gauri's age to Suman's age is 2:5. After 10 years, the ratio will become 3:7. Find Gauri's present age.
Let Gauri = 2k, Suman = 5k
After 10 years: (2k+10)/(5k+10) = 3/7
Solving gives k = 10, so Gauri = 20
After 10 years: (2k+10)/(5k+10) = 3/7
Solving gives k = 10, so Gauri = 20