Question

The number 2400 is first increased by 30%. The value obtained is
next decreased by 20%. Find the final number

Answer 1

2400
30% of 2400= 30/100×2400
=3/10×2400 (cancel 10 and 2400)
=3 ×240
=720

Increased by 30%= 2400+720
=3120

3120
20% Of 3120
=2/10×3120
=2×312
=624

Decreased by 20% = 3120-624
=2496

Therefore answer is 2496.

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Answer 2

2400

30% of 2400= 30/100×2400

=3/10×2400 (cancel 10 and 2400)

=3 ×240

=720

Increased by 30%= 2400+720

=3120

3120

20% Of 3120

=2/10×3120

=2×312

=624

Decreased by 20% = 3120-624

=2496

Therefore answer is 2496.

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