1. In January 1993, Cristina's age equaled the sum of digits comprised in her birth year. What year was Cristina born in?

2.Conversation between Peter and his Granny

Peter : Granny, how old are you?

Granny : Together with Grandpa, we are 140 years old, and Grandpa is twice as old as I was when he was as old as I am now.

So how old is Granny?

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MaiHealth:
1. In January 1993, Cristina's age equaled the sum of digits comprised in her birth year. What year was Cristina born in?

2.Conversation between Peter and his Granny

Peter : Granny, how old are you?

Granny : Together with Grandpa, we are 140 years old, and Grandpa is twice as old as I was when he was as old as I am now.

So how old is Granny?

You can also enjoy useful health tips by Viewing my profile

question 2

Let Granny be x years old, then,
Grandpa is (140 - x) years old
When Grandpa was x years old,
Granny was ½x years old.
Difference between their ages is always constant.
Therefore, (140 - x) - x = x - ½x
140 - 2x = (2x - x)/2
280 - 4x = x
280 = 5x
56= x
x = 56
Granny is 56 years old

MaiHealth:
1. In January 1993, Cristina's age equaled the sum of digits comprised in her birth year. What year was Cristina born in?

2.Conversation between Peter and his Granny

Peter : Granny, how old are you?

Granny : Together with Grandpa, we are 140 years old, and Grandpa is twice as old as I was when he was as old as I am now.

So how old is Granny?

You can also enjoy useful health tips by Viewing my profile

ANSWER to last week's teasers

Thanks to those who tried it and special thanks to yGoodmann and NDSMELODY for posting their answers here

Teaser 1
If Cristina is X years old in 1993, 1993-X will be her birth year.

Using trial and error to determine the year in which the sum of its digits will be equal to its difference with 1993, the answer will be 1973.


Check the picture below for the the second teaser's answer.


Stay tuned for this week's teasers

NEW TEASERS

1. Peter is four years older than Mark and eight years older than Paul. The product from Mark’s and John's ages is greater by 16 than the product from Peter's and Paul's ages.
Between these boys, two are twins. Give their names.

2. A thief went into a store and stole N1000 and then left the store. About 30 minutes later, the thief returned to the store and purchased an item that cost him N700. The thief paid for the item with the stolen cash and received N300 change from the cashier. The thief then left the store for a second and final time. How much did the store lose?

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