Question

A new pair of trainers are bought for £100. They then decrease in value by 20% each year. How much will they be worth in 2 years' time?​

Answer 1

• 
  `\boxed{\boxed{\sf{\:\:\:\green{£64}\:\:\:}}}`

`\\`

Explanation:

In the first year, the trainers will be worth 80% of their original value, which is:

`\rm\implies{£100 * 0.8 = £80}`

`\\`

In the second year, they will be worth 80% of their value after the first year:

`\rm\implies{£80 * 0.8 = \boxed{\boxed{\sf{\:\:\:\green{£64}\:\:\:}}}}`

`\\`

`\\`

`\therefore` The trainers will be worth £64 in 2 years' time.