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Answer 1

Answer:

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Step-by-step explanation:

Out of total 7 hours , she spends 4 hours in science and remaining time in maths so, 4 + remaining time = 7

therefore, remaining time = 7 - 4 = 3 hrs

so, she spends 3 hrs in studying maths

Percent is time she denotes in studying maths =

$\frac{time \: she \: studies \: maths}{total \: time \: she \: studies} \times 100 \\ \\ \frac{3}{7} \times 100 \\ \\ \frac{300}{7} \\ \\ = 42.8 \: \%$

Answer 2

Answer:

Out of total 7 hours , she spends 4 hours in science and remaining time in maths so, 4 + remaining time = 7

therefore, remaining time = 7 - 4 = 3 hrs

so, she spends 3 hrs in studying maths

Percent is time she denotes in studying maths =

time she studiesmaths/total time she studies=100

3/7×100

=42.8