Answer :
Cost of apples per lb = $0.89
Weight of apples my friend wants = 5.2 lb
Price my friend has to pay =
[tex] = 5.2 \times 0.89[/tex]
[tex] = $4.628[/tex]
My friend has to pay $4.628 .
Quantity of apple I want =
[tex] = 6 \frac{5}{10} \: pounds[/tex]
Price I have to pay :-
[tex] = 6 \frac{5}{10} \times 5.2[/tex]
[tex]5.2 = \frac{5 \times 5}{2 \times 5} [/tex]
[tex]5.2 = \frac{25}{10} [/tex]
[tex] = 6 \frac{5}{10} \times \frac{25}{10} [/tex]
[tex] = \frac{(10 \times 6 + 5)}{10} \times \frac{25}{10} [/tex]
[tex] = \frac{65}{10} \times \frac{25}{10} [/tex]
[tex] = \frac{65 \times 25}{10 \times 10} [/tex]
[tex] = \frac{1625}{100} [/tex]
[tex] = $16.25[/tex]
Therefore , I alone would have to pay $16.25 .