A girl gets n cedis pocket money each week. She saves her money for five weeks and buys a present for her mother which costs GH7900.00.
1) write an expression for the amount of money left.
2) what is the minimum amount she needs to save each week to be able to afford the gift?
1) 5n-7900
2) 7900/5 = ____ per week
1) Well, we know that the girl saves her money for five weeks. Let's call the amount of money she gets each week "n". So, the total amount of money she has saved is 5n. To find the amount of money left after buying the present, we subtract the cost of the present from the total saved: 5n - GH7900.00.
2) To calculate the minimum amount she needs to save each week, we divide the cost of the present by the number of weeks she is saving for. So, the minimum amount she needs to save each week is GH7900.00 / 5 weeks. Just make sure she doesn't spend it all on clown noses and squirting flowers!
1) To write an expression for the amount of money left, we need to find the total amount of money the girl has and subtract the cost of the present.
Let's say the girl gets n cedis pocket money each week for 5 weeks. The total amount of money she receives in 5 weeks is: 5n cedis.
The amount of money left after buying the present can be represented by the expression: 5n - GH7900.00 cedis.
2) To find the minimum amount she needs to save each week to afford the gift, we can set up an equation.
Since the girl saves all her pocket money for five weeks, the equation becomes:
5n = GH7900.00
To find the minimum amount she needs to save each week, we can solve for n:
n = GH7900.00 / 5
Dividing GH7900.00 by 5, we find that the minimum amount she needs to save each week is GH1580.00.
To answer the questions, we need to consider the amount of money the girl saves each week and the cost of the present.
1) To write an expression for the amount of money left, we can subtract the cost of the present from the total amount of money saved. Since the girl gets n cedis pocket money each week, the total amount of money saved after five weeks is 5n cedis. Subtracting the cost of the present, we have:
Amount of money left = 5n - GH7900.00
2) To determine the minimum amount the girl needs to save each week, we need to find the value of n that allows her to afford the gift. In this case, we want the amount of money left (as expressed in question 1) to be equal to or greater than zero, indicating that she can afford the gift. Thus, we set up the inequality:
5n - GH7900.00 ≥ 0
Next, we solve this inequality for n by isolating the variable:
5n ≥ GH7900.00
n ≥ GH1580.00
Therefore, in order to afford the gift, the girl needs to save a minimum of GH1580.00 each week.