Explanation

Let suppose original price = x

25% of x 25% X x

x- 25%x = 900

x - 25/100 x = 900

100x - 25x = 90000

75x = 90000

x=1200

Explanation

Let the no. of days = x

12×90=30×12+(12−2+8)x

1080−360=18x

720 = 18x

x = 40 days

Explanation

Gain%=(100+common gain%)2100−100∴Gain %=[(100+10)2100−100]%=(12100−10000100)%=21%

Explanation

Let the cost price of the dog be Rs. X

∴ the cost price of the cat = Rs. (6500 – X)

The man sold the dog at a gain of 20%

∴ Gain in selling the dog = 20% of X = 0.2X

Also, the man sold the cat at a loss of 10%

∴ loss in selling the cat = 10% of (6500 – X) = 0.1 × (6500 – X) = 650 – 0.1X

He gained 2% in the overall.

∴ Gain in overall transaction = 2% of 6500 = 130

∴ 130 = 0.2X – (650 – 0.1X)

0.3X = 130 + 650 = 780

X = 780/0.3 = 2600

Explanation

M.P. of an electric Iron = Rs. 690

After Discount, S.P. = 90% of 690 = Rs. 621

Gain = 8%

C.P of an electric Iron = 621×100100+8

= 621×100108= Rs.575

No Discount, gain of Iron = 690 - 575 = Rs. 115

gain % = 115575×100=20

Explanation

8.9+2-7*3

8.9+2-21

10.9-21

-10.1

Explanation

106 × 106 = 11236

94 * 94 = 8836

11236 - 8836 = 2400

Explanation

18250 × 10 = 182500

182500 – 2 = 182498

Explanation

When an electric iron is sold for Rs 2500, the profit is 22%.

2500X22/100

=550

=2500-550 = 1950

What will be the profit, when it is sold for Rs 2800?

1950-2800= 850

IF ANSWER WRONG PLZ ANSWER 0308-2533000

Explanation

Let the S.P = 100

then C.P. = 25

Profit = 75

Profit% = 75/25 * 100 = 300%