### Age and Digit

When usha was thrice as old as Nisha, her sister asha was 25. When Nish was hald as old as asha, then sister usha was 34. Their ages add to 100. How old is usha? [2016]

20

30

40

50

The sum of the digits of a two digit number is 12, and the ten's digit is one thord of the units digit. What is the number ? [2008]

93

54

48

39