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Mrs Henderson is wrapping gifts. For each of two of the gifts, she will need 4/5 sq. ft. of wrapping paper. For the last gift, she will need 2/3 sq. ft. of wrapping paper. Should she buy a 2 sq. ft. roll or 3 sq. ft roll of wrapping paper? Explain your answer.

Respuesta :

For each of the two gifts, she need 4/5th sq. feet.

Total she needs is

[tex]\frac{4}{5}+\frac{4}{5}=\frac{8}{5}[/tex]

For last gift, she needs 2/3rd sq. feet.

Thus, adding, we have:

[tex]\begin{gathered} \frac{8}{5}+\frac{2}{3} \\ =\frac{8(3)+2(5)}{15} \\ =\frac{24+10}{15} \\ =\frac{34}{15} \\ =2\frac{4}{15} \end{gathered}[/tex]

Thus,

Mrs. Henderson will need more than 2 sq. feet as we can see.

Hence, she should buy the 3 sq. ft. roll to wrap all her gifts.