Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out

£1.80 is the price per kilogram of the apples

Step-by-step explanation:

Here, x represents the number of apples per kilogram  and y represents the number of pears per kilogram.

As per the statement:

Julie buys 2kg of apples and 7kg of pears £12.70.

⇒          ....[1]

It is also given that the pears cost £1.30 per kilogram

⇒y =£1.30

Substitute in [1] we have;

⇒  

⇒  

Subtract 9.10 from both sides we have;

⇒  

Divide both sides we have;

x =£1.80

Therefore, £1.80 is the price per kilogram of the apples