Question

Solve any two questions step by step and the best answer will marked as brainliest and also will get ratings & thanks ​​
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The answers are...
5) 13
7) 19, 21, 23
8) 24 Boys
9) ₹ 50
10) 10 years
11) 45 years​

Answer 1

Answer:

According to the question ,

( X - 15 ) 2 =70

= X - 15 = 70/2

= X - 15 = 35

= X = 35 + 15

= X = 50

Hence ,

Before buying the book he has ₹ 50

now he has ₹ 15.

so , ( 50 - 15 ) = ₹ 35

Answer 2

Step-by-step explanation:

$\sf\large\underline\purple{Question \: \: 2:-}$

$\sf\large\underline\purple{Let:-}$

$\displaystyle \sf \bigstar \: anita \: age \: be \: x \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \displaystyle \sf \bigstar \: anita \: mom \: age \: be \: 4x$

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$\sf\large\underline\purple{Solution:-}$

$\displaystyle \sf \bigstar \: \boxed{ \underline{ \boxed{ \bold{according \: to \: the \: question}}}} \\ \\ \displaystyle \sf \longrightarrow \: 2(x + 20) = 4x + 20 \\ \\ \displaystyle \sf \longrightarrow \: 2x + 40 = 4x + 20 \: \: \: \\ \\ \displaystyle \sf \longrightarrow \: x = 10$