You turn 85% into a decimal
then multiply the decimal by the main number.
420x.85=357.
so 85% of 420 is 357
Answer:
I think C 45 blocks are the right answer.
I gave the answer earlier, but here is the solution again, along with a graph proving it is correct.
The shadow lengthened by 2.25 ft.
<u>Step-by-step explanation:</u>
Height of the lamppost is not needed here.
We can write the ratio as,
5 /4 = x/5
25 = 4x
x = 25/ 4
Now it is not needed to find the length of the new shadow, and so, we need to find the length of the added shadow.
25 / 4 - 16/ 4 = 25 - 16 / 4 = 9/4 = 2.25 ft
Length of the new shadow is 25/ 4 = 6.25 ft
So length of new shadow - length of old shadow = 6.25 - 4 = 2.25 ft shadow lengthened