Solution: We denote the number of hours by \(x\). If the total pay for the job was \(\$ 180,\) then how many hours did the three workers spend on the job? We must add the price increase to the old price.ī) To complete a job, three workers get paid at a rate of \(\$ 12\) per hour. Solution: We calculate the price increase as \(5 \% \cdot \$ 2.40. How much does the loaf of bread cost now, when its price was \(\$ 2.40\) last year? They require to model a given situation in the form of an equation.Ī) Due to inflation, the price of a loaf of bread has increased by \(5 \%\). The following word problems consider real world applications. We solve for \(x\) by adding 7 on both sides of the equation:Īfter dividing by \(2,\) we obtain the answer \(x=8\) Solution: Adding 9 to a number is written as \(x+9,\) while subtracting 7 from three times the number is written as \(3 x-7\). Find the number.ĭividing both sides by 4 gives the answer: \(x=3\).Į) Adding nine to a number gives the same result as subtracting seven from three times the number. 9 = 3x\nonumber\]ĭ) Multiply an unknown number by five is equal to adding twelve to the unknown number.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |