Telegram Group & Telegram Channel
Answer to Q90

Sally is 54 years old and her mother is 80, how many years ago was Sally's mother three times her age?

Let Sally's age be x
Let her mother's age be y

Now, x = 54 and y = 80
So, y - x = 26 (the mother will always be 26 years older than Sally at all time)

But there was a time when the mother's age was three times Sally's age.
So at that time: y = 3x - - eq i
But remember: y - x = 26 - - eq ii

From eq ii
y = 26 + x - - eq iii

Putting eq iii into eq i
26 + x = 3x
26 = 3x - x
26 = 2x
x = 26 ÷ 2
x = 13

So, when Sally was 13 her mother was 3 x 13 = 39. And to check, is 39 - 13, 26? Yes, so we are good.

But here is the tricky part, the question asked for how many years ago that scenario was not Sally's age at that time.

Sally is now 54 and the scenario was when she was 13, so that was 54 - 13 years ago

Answer: 41



tg-me.com/RiddlesRepositoryAnswers/98
Create:
Last Update:

Answer to Q90

Sally is 54 years old and her mother is 80, how many years ago was Sally's mother three times her age?

Let Sally's age be x
Let her mother's age be y

Now, x = 54 and y = 80
So, y - x = 26 (the mother will always be 26 years older than Sally at all time)

But there was a time when the mother's age was three times Sally's age.
So at that time: y = 3x - - eq i
But remember: y - x = 26 - - eq ii

From eq ii
y = 26 + x - - eq iii

Putting eq iii into eq i
26 + x = 3x
26 = 3x - x
26 = 2x
x = 26 ÷ 2
x = 13

So, when Sally was 13 her mother was 3 x 13 = 39. And to check, is 39 - 13, 26? Yes, so we are good.

But here is the tricky part, the question asked for how many years ago that scenario was not Sally's age at that time.

Sally is now 54 and the scenario was when she was 13, so that was 54 - 13 years ago

Answer: 41

BY Riddles Repository - Answers


Warning: Undefined variable $i in /var/www/tg-me/post.php on line 283

Share with your friend now:
tg-me.com/RiddlesRepositoryAnswers/98

View MORE
Open in Telegram


Riddles Repository Answers Telegram | DID YOU KNOW?

Date: |

The STAR Market, as is implied by the name, is heavily geared toward smaller innovative tech companies, in particular those engaged in strategically important fields, such as biopharmaceuticals, 5G technology, semiconductors, and new energy. The STAR Market currently has 340 listed securities. The STAR Market is seen as important for China’s high-tech and emerging industries, providing a space for smaller companies to raise capital in China. This is especially significant for technology companies that may be viewed with suspicion on overseas stock exchanges.

Unlimited members in Telegram group now

Telegram has made it easier for its users to communicate, as it has introduced a feature that allows more than 200,000 users in a group chat. However, if the users in a group chat move past 200,000, it changes into "Broadcast Group", but the feature comes with a restriction. Groups with close to 200k members can be converted to a Broadcast Group that allows unlimited members. Only admins can post in Broadcast Groups, but everyone can read along and participate in group Voice Chats," Telegram added.

Riddles Repository Answers from br


Telegram Riddles Repository - Answers
FROM USA