Question

30
Tonu invested 10% more than the
investment of Monu and Sonu invested
10% less than the investment of Monu. If
the total investment of all the three persons
is 60,000, the investment of Monu is -
टोनू, मोनू से 10% ज्यादा निवेश करता है तथा
सोनू, मोनू से 10% कम निवेश करता है । यदि
तीनों व्यक्तियों का कुल निवेशर 60,000 है, मोनू

का निवेश है​

Answer 1

GiveN:-

• Tonu invested 10% more than the investment of Monu.
• Sonu invested 10% less than the investment of Monu.
• The total investment of all the three persons
• is 60,000$.$

To FinD:-

• Investment of Monu?

Solution:-

We can see that, investment made of Tonu and Sonu can be expressed in terms of Monu's investment. So, let the investment made by Monu be x.

Then,

• Tonu's investment

= x + 10% of x

= 110% of x

= 11x / 10

• Sonu's investment

= x - 10% of x

= 90% of x

= 9x / 10

According to question:

• Total investment made = Rs. 60000

⇒ x + 9x / 10 + 11x / 10 = Rs. 60000

⇒ 10x + 9x + 11x / 10 = Rs. 60000

⇒ 30x / 10 = Rs. 60000

⇒ x = Rs. 60000 × 10 / 30

⇒ x = Rs. 20000

Hence:-

• The investment made by Monu in the group of 3 was Rs. 20,000

Answer 2

Answer:

$\huge \bf \: Given$

• Tonu invested 10% more than the investment of Monu.
• Sonu invested 10% less than the investment of Monu.
• The total investment of all the three persons is 60,000.

$\huge \bf \: To \: find$

Investment of Monu

$\huge \bf \: Solution$

Concept

Here it is given investment of 3 person Tonu, Monu and Sonu. Where Tonu invest 10% more than Monu and Sonu invest 10% less than Monu. And sum of their amount is ₹60,000.

Therefore

Sonu investment

$\sf \: x\% \: + \: 10% of x$

$\sf \: 110\% \: of \: x$

$\sf \dfrac{11x}{10}$

Now

Sonu investment

$\sf \: x \: - 10\% \: of \: x$

$\sf \: 90\% \: of \: x$

$\sf \: \dfrac{9x}{10}$

NOW,

$\sf \: total \: investment \: made = Rs. 60000$

$\sf x + \dfrac{9x}{10} + \dfrac{11x}{10} = Rs. 60000$

$\sf 10x + 9x + \frac{11x}{10} = Rs. 60000$

$\sf \frac{30x}{10} = Rs. 60000$

$\sf x = Rs. 60000 × \dfrac{10}{30}$

$\sf x = Rs. 20000$

Monu's investment = ₹20,000