Explanation

Let total income be = x
 after spending 20% of x he has = 10080​x

after spending 70% of remaining he has
=10030​×10080​x
10030​×10080​x=1800
x=241800×100​=300×25=7500

Explanation

At 5% loss. SP =Rs.95x100$=Rs.\frac{95x}{100}$

Now,95x100+80=105x100$Now,\frac{95x}{100}+80=\frac{105x}{100}$

=>105x100−95x100=80$=>\frac{105x}{100}-\frac{95x}{100}=80$

=>105x−95x100=80$=>\frac{105x-95x}{100}=80$

=>x=800010=Rs.800

Explanation

56-19=37

Explanation

40% of 200

40/100*200

40*2

80

Explanation

47 × 47 = 2209

Clearly, 6 should be added to 2203 to get a perfect square.

Explanation

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Explanation

2 + 1 = 3

3 + 2 = 5

5 + 3 = 8

8 + 4 = 12

12 + 5 = 17

17 + 6 = 23

Explanation

To find the sum, we add the numbers together:

11

33

55

77

99

Starting from the rightmost digit (ones place):

1 + 3 + 5 + 7 + 9 = 25

Write down 5 and carry over 2 to the next place.

Moving to the next digit (tens place):

1 + 3 + 5 + 7 + 9 = 25

Add the carry-over 2: 25 + 2 = 27

Combine the digits: 275

So, 11 + 33 + 55 + 77 + 99 = 275

Explanation

16 of 40 can be written as:

1640

Multiply both numerator & denominator by 100

1640 × 100100 = 40100 = 40%

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If you are using a calculator, simply enter:

16÷40×100 = 40%

Explanation

قیمت خرید 250 ہے جبکہ قیمت فروخت 500 ہے۔

منافع ہوا 250

100*250/250 = 100%