4 years ago

Find the value of x.

Mathematics

1 answer:

kicyunya [14]4 years ago

6 0

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

yanalaym [24]

Answer:

41 years ago

Step-by-step explanation:

Let the no. of years ago be x.

Then, the equation we need would be :

=> 80 - x = 3(54 - x)

=> 80 - x = 162 - 3x

=> 2x = 82

=> x = 41

Sally's mother was 3 times her age 41 years ago

Checking

=> Sally = 54 - 41 = 13

=> Mom = 80 - 41 = 39

=> 13 x 3 = 39 [∴Verified]

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Step-by-step explanation: