1) In a packet of sweets the ratio of red : blue : yellow sweets is 1:2:4. if there are 24
yellow sweets in a packet how many red and blue sweets are there?
2) A businessman employs John and Tshepho at the end of every month to assist in
filing invoices. For every 5 invoices John files, Tshepho files 7. if a total of 900
invoices are filed at the end of the month, how many invoices did each person file?
3) Increase 54 in the ratio 7:2
4) Decrease 0,5 in the ratio of 3:5
5) A man drives 600 km from Johannesburg to Durban. He starts his journey with a full
tank of petrol.
a) If the man drives at an average speed of 120 km/h, how long would the journey
take?
b) What would the average speed of the man have to be to complete the journey in
five and a half hours?
c) On his arrival in Durban he fills his tank and finds that it takes 45 litres of petrol to
fill his tank. Calculate the petrol consumption of the car.
Give the answer in litres/100 km
d) If the man pays R634,5 to fill his tank, how much does petrol cost per litre?
6) A local supermarket sells milk in 3 l containers for R36 and 2 l containers for R23.
Which is the better option?