Rocks that are found outside are usually made of dirt clumps, so hose dissolve real quick. the other rocks are solid and need lots of time before the could even crack
A certain drug is made from only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for every 4 milliliters of compound B. If a chemist uses 255 milliliters of compound A, how many milliliters of the drug will be made?
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4:5 is the same as 4x:5x where 4x is compound A and 5x is compound B.
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Solve for "x":
If amount of compound A is 4x = 255
x = 255/4
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Then amount of compound B is 5x = 5(255/4) = 318.75 ml
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