Hey there ,can anyone help with formula to calculate ratios, ages , simple interest, discount-tax ?
Answers
Answer:
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Step-by-step explanation:
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To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero). For example, if we divide both terms in the ratio 3:6 by the number three, then we get the equal ratio, 1:2.
to find ages
Basic Formulas on Ages
If the present age is x, then n times the age is nx. If the present age is x, then age n years later/hence = x + n. If the present age is x, then age n years ago = x – n. The ages in a ratio a : b will be ax and bx.
To find simple interest
P×R×T/100
TO FIND DISCOUNT
Remember the formula for finding the discount price of an item. Where S = sale price, r = discount percentage rate and p = original price, the discount formula is: S = p - rp.
To find tax
Calculating Effective Tax Rate
The most straightforward way to calculate effective tax rate is to divide the income tax expenses by the earnings (or income earned) before taxes. For example, if a company earned $100,000 and paid $25,000 in taxes, the effective tax rate is equal to 25,000 ÷ 100,000 or 0.25.