A woman bought a horse for PhP30,000 and then sold it for PhP40,000. She bought it back for PhP50,000 and then sold it again for PhP60,000. How much did she gain or lose on these transactions? Please show complete solution. Thanks.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.