exam
Maths Puzzle
Numerical Ability
How much pure alcohol must be added to 40 oz of a 25%
solution to produce a mixture that is 40% alcohol?
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exam Other Question
Suppose that x and y vary inversely and x=4 when y=7 Write the function that models the inverse variation
a. y+1.75 b. y= 28/x c. y=11/x d. y=3/x
i need to find the simple interest
prinipal: $21,ooo
rate:5.25%
time: 18 years
thanks for helping