Answer:
87.5%
Step-by-step explanation:
7 are shaded
8 total boxes are there
7/8= .875
.875*100=87.5%
Answer:A hope this helped
If Kalon can complete the job in 4 hours, he has completed 1 5/7 over 4 of the job if he works together with Marna. Letting x be the number of hours it will take Marna to work alone, she has completed 1 5/7 over x of the job. The amounts of job they have done should be equal to 1.
(1 5/7 / 4) + ( 1 5/7 / x ) = 1
The value of x is 3. So, Marna can clean the chimney in 3 hours.
x=smaller number
y=larger number
x+y=12
y=3x-6
Let's begin with the first equation...
x+y=12
Let's substitute...
x+(3x-6)=12
4x-6=12
Let's add 6 to both sides as we proceed to isolate x...
6+4x-6=12+6
4x=18
Let's divide both sides by 4...
(4x)/4=18/4
x=9/2=4.5---smaller number
12-4.5=7.5s larger number