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kakasveta [241]
3 years ago
6

Margaret's bottle of shampoo is seven eights phone. She uses 1/3 of the shampoo in the bottle to wash the dog. Estimate what fra

ction of shampoo is left. Use whole numbers in benchmark fractions to explain.
Mathematics
1 answer:
guajiro [1.7K]3 years ago
7 0

Fraction of shampoo left =  \frac{13}{24}

Solution:

Given fraction of full shampoo =\frac{7}{8}.

Fraction of shampoo Margaret used =\frac{1}{3}

Fraction of shampoo left = Full shampoo – fraction of shampoo used

                                           $=\frac{7}{8}-\frac{1}{3}$

To make the denominators same do cross multiplication.

                                           \begin{aligned}&=\frac{7 \times 3}{8 \times 3}-\frac{1 \times 8}{3 \times 8}\\&=\frac{21}{24}-\frac{8}{24}\\&=\frac{21-8}{24}\\&=\frac{13}{24}\end{aligned}

Hence $\frac{13}{24}$ of the shampoo bottle is left.

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