This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
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Step 3: Perform multiplication. 99 ÷ 9 + 7 × 7 - 100 ÷ 5 = 11 + 49 - 20 Step 4: Perform addition and subtraction from left to right. 11 + 49 - 20 = 60 - 20 60 - 20 = 40 The answer is 40. 5. Just write the statement for the following problems. a) 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? Step 1: Calculate the total cost of the shirts. 3 × R250 = R750 Step 2: Subtract the cost from the initial amount. R1000 - R750 = R250 You have R250 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? Step 1: Calculate the total cost of plane tickets for four people. 4 × R4500 = R18000 Step 2: Add the car rental fee to the total ticket cost. R18000 + R2500 = R20500 The total cost of their travel is R20500. c) 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? Step 1: Calculate the initial cost of the speakers. 4 × R500 = R2000 Step 2: Apply the discount to find the amount paid for speakers. R2000 - R375 = R1625 This is the money spent. Step 3: Calculate the total money earned from selling gadgets. R650 + R180 + R425 = R1255 Step 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 Your final balance is -R370. That's 2 down. 3 left today — send the next one.