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1). 75 is 60 % of _____________ .
2). 36% of 900 is _____________ .
3). 45 is 30% of ______________ .
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(1) 75 is 60% of x. Find x.
To find x, write an equation, saying that 60% of x is 75; then solve this equation.
0.6x = 75
x = 75/0.6 = 125.
ANSWER. 75 is 60% of 125.
Solved.
(2) 36% 0f 900 is 0.36*900 = 324.
ANSWER. 36% of 900 is 324.
Solved.
(3) 45 is 30% of x. Find x.
To find x, write an equation, saying that 30% of x is 45; then solve this equation.
0.3x = 45
x = 45/0.3 = 150.
ANSWER. 45 is 30% of 150.
Solved.
Everything is solved.
Notice that problem (3) is of the same type as problem (1).
Therefore, I solved them word-in-word.
The logic and the calculations are the same.
Only the numbers are different.
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- Percentage word problems (Type 3 problems, Finding the Base)
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