Question

2. Find the value of x, if:
(i) 25% of x is 75 marbles?
(ii) 60% of x is 30 apples?
(iii) 90% of x is 1800?
(iv) 33-% of x is 4000?​

Answer 1

Answer:

Step-by-step explanation:

1. $\frac{25}{100}$ × x = 75

   x = 75 ÷ $\frac{25}{100}$

   x = 300 marbles

2. $\\ \frac{60}{100}$ × x = 30

   x = 30 ÷ $\frac{60}{100}$

   x = 50 apples

3. $\frac{90}{100}$ × x = 1800

   x = 1800 ÷ $\frac{90}{100}$

   x = 2000

4. $\frac{33}{100}$ × x = 4000

   x = 4000 ÷ $\frac{33}{100}$

   x = 1212.12

Answer 2

Answer:

i) 25% of x=75

25/100×x=75

1/4x=75

x=75×4

x=300

ii)60% of x=30

60/100×x=30

3/5x=30

x=30×5/3

x=50

iii)90% of x=1800

90/100x=1800

9/10x=1800

x=18000÷9

x=2000

iv)-33% of x=4000

-33/100x=4000

-33x=400000

x=12121.21212

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