Question

1. Amrita is 8 years elder to her brother Aman, if the ratio of their agesis 7:3. Find their present ages.
2. Find the value of- (2/3)^2
3. Find the value of x in (2^2x)^3
4. Solve 6(x+1)=7(x-2)+5
5. From the sum of 4+3x and 5-4x+2x^2, subtract the sum of 3x^2-5x and -x^2+2x+5


Please show with explanation.

Answer 1

Answer:

1/ 1687

2/777

3/222

Step-by-step explanation:

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Answer 2

Answer:

Let the age of Amrita be \textbf{7x}7x years

So, the age of Aman be \textbf{3x}3x years

According to Question,

7x = 3x + 8

=> 7x - 3x = 8

=> 4x = 8

=> x = 8/4

=> \boxed{x = 2}x=2

•°• The age of Amrita = 7x years = 7(2)

= \textbf{14 years}14 years

The age of Aman = 3x years = 3(2)

= \textbf{ 6 years} 6 years