The best possible choice for addition will be given by
a) Cost of 5 boxes of 1 kg rice = £7
b) Cheapest way to buy 5 kg rice is by buying 2 kg + 2 kg+ 1 kg and the
cost is £6.7
What is addition?
Bringing two or more numbers together to find a new total is called addition.
Here,
a) Cost of 1 kg rice = £1.4
Cost of 5 boxes of 1 kg rice = £1.4 * 5
= £7
b) Possible ways of buying 5kg rice
1) 1 kg + 1 kg + 1 kg + 1 kg + 1 kg
2) 1 kg + 1 kg + 1 kg + 2 kg
3) 1 kg + 1 kg + 1.5 kg + 1.5 kg
4) 2 kg + 2 kg + 1 kg
Now
cost of rice in 1) = £(1.40 + 1.40 + 1.40 + 1.40 + 1.40) = £7
cost of rice in 2) = £(1.40 + 1.40 + 1.40 + 2.65) = £6.85
cost of rice in 3) = £(1.40 + 1.40 + 2.05 + 2.05) = £6.9
cost of rice in 4) = £(2.65 + 2.65 + 1.40) = £6.7
Cheapest way to buy 5 kg rice is by buying 2 kg + 2 kg+ 1 kg and the cost is £6.7
To learn more about addition, refer to the link:
brainly.com/question/5982761
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Complete Question
A shop sells three different sized boxes of rice. Nice Rice 1kg £1.4, 1.5 kg
£2.05, 2kg 2.65
a) I want of rice. I could buy five boxes of size . How much would that cost? b) I could buy of rice in different ways. How much would it cost to buy of rice in the cheapest way possible?
, while the even-numbered terms are 
, so one formula for the sequence is
.