Question

Pls give me correct answer, my brainly friends

Answer 1

Answer:

17000+18000

4x y = 36

hope it is helpful to you

Answer 2

Question:

Amita invested some part of 35000 rupees at 4 % and the rest at 5 % interest for one year. Altogether her gain was Rs. 1530. Find out the amounts she had invested at the two different rates. Write your answer in words.

Answer:

The amounts Amita had invested are Rs. 22000 & Rs. 13000.

Step-by-step-explanation:

Let the two amounts invested by Amita be Rs. x and Rs. y.

From the first condition,

Total amount invested was Rs. 35000.

$\displaystyle{\boxed{\pink{\sf\:\boxed{\sf\:x}\:+\:\boxed{\sf\:y}\:=\:35000}}\sf\:\quad\:\dots\:(\:I\:)}$

$\displaystyle{\implies\blue{\sf\:x\:=\:35000\:-\:y}}$

Now, from the second condition,

The interest gained at rates 4 % for Rs. x & 5 % for Rs. y was Rs. 1530.

$\displaystyle{\boxed{\pink{\sf\:\dfrac{4}{100}\:x\:+\:\dfrac{5}{100}\:y\:=\:1530\:}}\sf\:\quad\:\dots\:(\:II\:)}$

$\displaystyle{\implies\sf\:\dfrac{4x}{100}\:+\:\dfrac{5y}{100}\:=\:1530}$

$\displaystyle{\implies\sf\:\dfrac{4x\:+\:5y}{100}\:=\:1530}$

$\displaystyle{\implies\sf\:4x\:+\:5y\:=\:1530\:\times\:100}$

$\displaystyle{\implies\sf\:4x\:+\:5y\:=\:153000}$

$\displaystyle{\implies\sf\:4\:\times\:(\:35000\:-\:y\:)\:+\:5y\:=\:153000}$

$\displaystyle{\implies\sf\:140000\:-\:4y\:+\:5y\:=\:153000}$

$\displaystyle{\implies\sf\:140000\:+\:y\:=\:153000}$

$\displaystyle{\implies\sf\:y\:=\:153000\:-\:140000}$

$\displaystyle{\implies\boxed{\orange{\sf\:y\:=\:13000}}}$

Now, by using y = 13000, we get,

$\displaystyle{\sf\:x\:=\:35000\:-\:y}$

$\displaystyle{\implies\sf\:x\:=\:35000\:-\:13000}$

$\displaystyle{\implies\boxed{\blue{\sf\:x\:=\:22000}}}$

$\displaystyle{\therefore\:\underline{\boxed{\red{\sf\:x\:=\:Rs\:22000\:}}}\:,\:\underline{\boxed{\red{\sf\:y\:=\:Rs\:13000\:}}}}$

∴ The amounts Amita had invested are Rs. 22000 & Rs. 13000.