A plant grew 3/4 of an inch one week and twice as much the next week. How tall is the plant now

Question

The plant is 6 inches

Answer 1

Hi Jackie,

Part of the problem says “the plant is 6 inches,” so I’ll assume that it was 6 inches tall before the two weeks began.

In the first week it grew 3/4 of an inch.

In the second week it grew 2 * (3/4) of an inch. When we multiply two numbers together like this we just multiply the 2 times the numerator of the fraction, so we get growth of 6/4 in the second week.

The total height of the plant is the original 6 + 3/4 + 6/4.

When we add the 3/4 + 6/4, since the denominators are the same, we can just add the numerators and leave the denominator alone: 3/4 + 6/4 = 9/4 which is also 2 1/4.

The total height of the plant is 6 + 2 1/4 = 8 1/4 inches tall.

Please let me know if I can be more helpful, thanks!

Joe

Answer 2

6 in + (3/4) in + 2 x (3/4) in =

6 in + 9/4 in =

24/4 in + 9/4 in =

33/4 in = 8.25 in