Question

I Solve the following problems 2 x11=22

1. In a survey, 14% of teens said they own digital camera. Predict how many of the the 4,20,000 teens in Delhi own digital camera.

2. What is the rate of interest which yields an interest of rupees 280 on a sum of rupees 56,000 after 2 years?

3. The selling price of 10 pencils is equal to the cost price of 11 pencils. What is the profit percent?

4. 10 men can dig a well in 9 days. In how many days can 15 men dig the same well ?

5. The angles of a triangle are in the ratio 3:4:5. Find the angles.

6. Perimeter of a rectangle is 96m. Its length is 3 times its breadth. Find its length and breadth.

7. If the product of a number and 15 is 1455. Find the number.

8. Add.
a) 2x + 5b + 3, 8a - 3b + 3

b) - 3m + 12n - 17m + 8n

9 Subtract:
a). 6 + 3x + 6x² - 8x³ from 0.

b) 4x³ - 7x² + 5x - 4 from 6 - 5x + 6x² - 8x³

10 Simplify:

2x -[3x -{4x -(3y - 2x -2y)}]

11. Solve:
a) 13 (x - 5) = 104
b) 4(2x - 3)+ 5(3x - 4) =14

II. Find the ratio in the simplest form: ½x2=1

a) 10 kg to 500 grams
b) 40 minutes to 2 hours​

Answer 1

Answer:

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Step-by-step explanation:

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