Question

At the market, a pear costs b cents and an apple costs 7 cents

less than a pear. Randy buys 4 pears and an apple. How much
does Randy pay in terms of b?

Answer 1

Randy has to pay
`\mathbf{5b-7}`

Explanation:

Cost of pear = b

Cost of apple =b-7

Randy buys pears = 4

Apple = 1

We need to find cost in terms of b

So, the equation will be:

`4b+1(b-7)\\4b+b-7\\5b-7`

So, Randy has to pay
`\mathbf{5b-7}`