Answer:
Mr Juan is 48 years old and Eric is 16 years old
Step-by-step explanation:
let Eric's age be x, then his father is 3x ( three times as old as Eric )
the sum of their ages is 64 , that is
x + 3x = 64 ( simplify left side )
4x = 64 ( divide both sides by 4 )
x = , that is
x = 16
and 3x = 3 × 16 = 48
Mr Juan is 48 and Eric is 16
If a pack of paper costs $27.00 right now. If the paper is discounted by 25% from its regular price, the carton will be sold for $6.75.
It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.
Given that a carton of paper costs $27.00 right now, If the price of the paper is discounted by 25%,
The usage of percentages is widespread and diverse. For instance, numerous data in the media, bank interest rates, retail discounts, and inflation rates are all reported as percentages. For comprehending the financial elements of daily life, percentages are crucial.
The sale price of the carton is,
sale price = 25% of the current price
sale price =(25/100)× $27.00
sale price = $6.75
Thus, if a pack of paper costs $27.00 right now. If the paper is discounted by 25% from its regular price, the carton will be sold for $6.75.
Learn more about the percentage here:
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y = x+ 2
6x – 4y = –10