155. Impressed by admiration of the boy by stranger, the father said “My son is five times as old as my daughter and my wife is five times as old as my son. I’m double the age of my wife and my grandmother is as old as the sum of ages of all of us and she is celebrating her 81st birthday.” what is the age of the boy?

Ans:

5 yrs

156. Harry is a friend of Axy and Amy. Two statements are given about them.
1. if one of Axy and Amy is oldest then another is youngest.
2. Either Harry is the oldest or Amy is the youngest.
Who is the oldest?
Ans:

Axy

157. sons age is 5 times daughters.mother is five times son.father is 5 times wife.
Total of all age is Grandpas who is celebrating 81st B`day

5 yrs

come in the reverse order 1+3=4 and twice of it 8+2=10 and twice of it 20+1=21 and twice of it 42.

158. One woman buys plates worth 1.30$ at 2cent discount each plate.Then she exchanged the plates for sausers & bowl where one bowl & one sausers costs equal to one plate.no of sausers which costs 3 cent is10 more than bowl. no of saucers & bowl is 16 more than no of plates.

Ans:

10Plates

159. “One-sixth of my life”, said my boss, “I spent as a child, next one-twelfth as an old boy, one-seventh & 5 more years in politics & socialization. This brought me upto when Jimmy born. Jimmy was elected for the governer four years ago, when he was half my present age.”
How old is my boss?

160. A tree on first day grows 1/2 of its size second day 1/3rd of its size on the previous day similarly than 1/4th and so on.u have to calculate after how many days the tree will be 100 times of its original size

Ans:

198 days