Jenny decided to grow out her hair. Over 6 months, her hair length grew by 100%. During the next 6 months, her hair length grew

Question

Alexeev081 [22]

3 years ago

6

Jenny decided to grow out her hair. Over 6 months, her hair length grew by 100%. During the next 6 months, her hair length grew

by 50%. What was the combined increase in hair length during the entire year

Mathematics

2 answers:

zimovet [89] · Answer 1 · 2022-04-15T06:33:36+03:00

zimovet [89]3 years ago

8 0

150% in 12 months. .......

musickatia [10] · Answer 2 · 2022-04-15T08:16:02+03:00

In your mind, you could think 100% more is 200% and 50% of that is another 100% so 200% increase. Let's see on paper. x will be her current hair length.

x + x + .5(x + x) 

x + x is simply her hair length doubling. This is when it grew 100% longer. Then, from that, we have 50% more, so we have to add 50% of the x + x. 

2x + .5x + .5x 
3x 

Subtract our starting length. 

3x - x = 2x 

The difference is 2 hair lengths, or 200% her original length of hair.