an apple costs a cents while a pear costs b cents more tahn an apple. find in terms of a and b the cost of 5 apples and 7 pears

Question

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Answer 1

an apple costs a cents

cost of 5 apples = 5a

 

a pear costs b cents more tahn an apple

cost of 1 pear =  a+b

cost of 7 pear =7(a+b)=7a+7b

 

 

cost of 5 apples and 7 pears =5a +7a+7b =12a+7b