Answer:
187.5 pounds
Step-by-step explanation:
Fraction of sand = 2/5
Fraction of clay = 2/5
Fraction of peat = 1/5
Pounds of sand = 75
The total pounds of soil required to make Correct mixture : let that be x
Hence,
Using the sand Fraction and pounds which we know :
2/5 of x = 75
2x / 5 = 75
Cross multiply :
2x = 75 * 5
2x = 375
x = 375 / 2
x = 187.5
Required pond of sand =187.5 pounds
2x+5x+5=180 so x has to be 25
to estimate round the 3 values to the nearest dollar
2.99 = 3
4.79 = 5
3.87 = 4
3 + 5 +4 = 12
estimated total would be approximately $12
real total = 2.99 + 4.79 +3.87 = 11.65 ( not far off of the estimated value)
The simplified ratio would be 4 to 1! hope this helps :)
