Problem Solving

 
7.4 Problem Solving
 
 
COORDINATES

Find the coordinates for the golden coin, the ship and the small island.

SOLUTION:

Coordinates for golden coin: E3

Coordinates for ship: E1

Coordinates for small island: I4

 
RATIO


There are 6 pieces of red clothes, 10 pieces of white clothes and 3 pieces of blue clothes. Find

a) The ratio of red clothes to white clothes.

b) The ratio of blue clothes to red clothes.

c) The ratio of white clothes to all clothes.

SOLUTION:

a) The ratio of red clothes to white clothes is 6:10 or 3:5.

b) The ratio of blue clothes to red clothes.is 3:6 or 1:2.

c) The ratio of white clothes to all clothes is 10:19.

 
PROPORTION


Encik Rahim receives RM30 for 5 hours of work. How much does he receive for 8 hours of work?

SOLUTION:

\(\frac{\text{RM }30}{5\text{ hours}}= \frac{?}{8\text{ hours} }\)

\(\frac{\text{RM }30}{5\text{ hours}}\times 8\text{ hours} = \text{ RM }48\)