MIP1501 Assignment 3 Memo | Due 30 July 2025

, PLEASE USE THIS DOCUMENT AS A GUIDE TO ANSWER YOUR ASSIGNMENT

 Question 1

1.1. A tractor travels 90 kilometers on 18 liters of fuel. How much fuel will it need to travel 130
kilometers? Round off your answer to 2 decimal places.

Given:
 90 kilometers → 18 liters of fuel
 130 kilometers → ? liters of fuel

Step 1: Find the fuel consumption rate (liters per kilometer):

18 litres
Fuel consumption rate = = 0.2 liters per kilometer.
90km

Step 2: Find the fuel needed for 130 kilometers:

Fuel for 130 km = 0.2liters/km × 130km = 26liters

Answer: The tractor will need 26 liters of fuel to travel 130 kilometers.


1.2. 7 kg of tomatoes cost R 56,63. How much are you going to pay for 10 kg of tomatoes?

Given:
 7 kg → R 56,63
 10 kg → ?

Step 1: Find the cost per kilogram:

56,63
Cost per kg =  8,09 R/kg
7

Step 2: Find the cost for 10 kg:

Cost for 10 kg = 8,09R/kg × 10kg = 80,90R

Answer: You will pay R 80,90 for 10 kg of tomatoes.

, 1.3. If 30 men can build a wall of a shopping centre in 20 days, how long will it take 25 men to
build the exact same wall?

Given:
 30 men → 20 days
 25 men → ? days

Step 1: Set up the inverse relationship:

Men × Time = Constant
30 × 20 = 25 × Time

Step 2: Solve for the time:

30 x 20 600
Time =   24 days
25 25

Answer: It will take 24 days for 25 men to build the wall.


1.4. John is the catering manager at a lodge. He usually uses the following meat ration in a week
when he has 6 guests staying at the lodge:




1.4.1. How much does the Chicken cost per kg?

Given:
 200g of chicken costs R 19

Step 1: Find the cost per gram:




Step 2: Find the cost per kilogram:




Answer: The chicken costs R 95 per kg.