Answer:
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Step-by-step explanation:
46%d+57%y=55%x42
x+y=42
Find y
x=42-y
46%(42-y)+57%y=23.1
19.31-46%y+57%y=23.1
11%y=23.1-19.31
11%y=3.79
y=34
The answer is D
72 divided by 9 = 8
8 + 4x4 = 8+16
8+16=24
Answer:
Step-by-step explanation:
12 x + 4 y = 42 .............1
16 x + 8 y = 64 .............2
Eliminate y
multiply (1)by -2
Multiply (2) by 1
-24 x -8 y = -84
16 x 8 y = 64
Add the two equations
-8 x = -20
The key to understanding the question is to keep the details at the fore.
Percentage = 25%
Amount = 230
Our answer to the estimation is given by the formula: