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Solve the following arithmetic problems and write the statements for the word problems.

Mathematics

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Answers

2 parts
a

R250\text{R}250

R20500\text{R}20500

c

−R370-\text{R}370

Step-by-step solution

8 steps

Step 3: Perform multiplication.

99÷9+7×7−100÷5=11+49−2099 \div 9 + 7 \times 7 - 100 \div 5 = 11 + 49 - 20

Step 4: Perform addition and subtraction from left to right.

11+49−20=60−2011 + 49 - 20 = 60 - 20 60−20=4060 - 20 = 40

The answer is 40\boxed{40}.

5. Just write the statement for the following problems.

Part a· 4 steps

You start with R1 000 in your wallet. You go to a store and buy 3 shirts that cost R250 each. How much money do you have left?

  1. Calculate the total cost of the shirts.

    3×R250=R7503 \times \text{R}250 = \text{R}750

  2. Subtract the cost from the initial amount.

    R1000−R750=R250\text{R}1000 - \text{R}750 = \text{R}250

    You have R250\boxed{\text{R}250} left.

    b) A family of four is flying to a holiday destination. Each plane ticket costs R4 500. If they also have to pay a flat fee of R2 500 for their car rental for the week, what is the total cost of their travel?

  3. Calculate the total cost of plane tickets for four people.

    4×R4500=R180004 \times \text{R}4500 = \text{R}18000

  4. Add the car rental fee to the total ticket cost.

    R18000+R2500=R20500\text{R}18000 + \text{R}2500 = \text{R}20500

    The total cost of their travel is R20500\boxed{\text{R}20500}.

Part c

−R370-\text{R}370

You buy 4 identical speakers at R500 each. You get a discount of R375 at the till. Later that day, you sell three old gadgets for R650, R180, and R425. What is your final balance?

  1. Calculate the initial cost of the speakers.

    4×R500=R20004 \times \text{R}500 = \text{R}2000

  2. Apply the discount to find the amount paid for speakers.

    R2000−R375=R1625\text{R}2000 - \text{R}375 = \text{R}1625

    This is the money spent.

  3. Calculate the total money earned from selling gadgets.

    R650+R180+R425=R1255\text{R}650 + \text{R}180 + \text{R}425 = \text{R}1255

  4. Calculate the final balance by subtracting money spent and adding money earned.

    Assuming you started with R0 balance for this transaction.

    R1255−R1625=−R370\text{R}1255 - \text{R}1625 = -\text{R}370

    Your final balance is −R370\boxed{-\text{R}370}.

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