Question

1. Find the value of x when (a) 9 : x : : 54 : 48 (b) 2, 6 , x are in continued proportion.

2. Divide Rs.275 among Reema and Shyam in the ratio 4 : 7. What will be the share of Reema and share of Shyam.

3. Simplify the following : (a) (-13) x (-5) (b) (-144) ÷ 16

4. Add+18 and -32

5. Which one is greater : 4 : 5 and 3 : 10.

6. Write the integer which is 7 more than -5.

7. What is the area (A) of a square, if side of the square is 's'?

Please I really need help

Answer 1

1.

(a) 9 : x :: 54 :: 48

➡ x = 8

(b) 2, 6, x are in continued proportion

➡ x = 12

2.

Let the common ratio be x.

Reema's share = 4x

Shyam's share = 7x

4x+7x = 275

11x = 275

x = 25

Reema's share = 100

Shyam's share = 175

3.

(a) 65x

(b) -9

4. -14

5. 4:5 is greater

6. The integer is 2.

7. The area of square is = ⤵

7. Area of square =

${s}^{2}$

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