Michele Conway, Belle Cottingham, Alastair Duncombe and, Amanda George Solutions for Exercise 3: Exercise 1

Farzana bought $6$ plants for $\$7.50$.Gary bought $8$ plants for $\$9$.Who got the better deal.
 

Here, are some jars of jam at different prices.Which jar is the best value for money.

A letter has a mass of $150 gm$.It can be posted for first class $80 cents$ or second class for $68 cents$.Calculate the cost per gram for first and second class post.

The table shows the population and area of $4$ continents in $2018$.Complete the table.(Round the answer nearest unit)

The table shows the population and area of $4$ continents in $2018$.Complete the table.(Round the answer nearest unit).Which of the continents is the least densely populated.

The table shows the amount of waste(in million tones) and population (in millions) for three countries.Place the countries in order starting with the highest waste per person.

An electric fire uses $18$ unit of electricity over a period of $7.5 hrs$.An electric heater uses $15$ unit of electricity over a period of $6 hrs$.Which one is the most efficient item.

$4$ litre of Delus paint to paint a wall that is measures $5.25 m$ by $4 m$.A tin of perfect paint contains $25\%$ more paint and can paint a wall that measures $6.25 m$ by $4 m$.Calculate how many millilitres of each paint are used to paint $1 c{m}^2$ of the wall.