For #s 4-7
#4) is Increase 35 by 40%
35 * 1.4 = 49
#5)Increase 125 by 8%
125 * 0.08 = 10
#6) Decrease 8 by 75%
8 * 0.75 = 6
#7) Decrease 135 by 22%
135 * 0.22 = 29.7
ARE THESE CORRECT YOU HAD TO FIND THE NEW AMOUNT.
To find the new amount after an increase or decrease, you can use the following formula:
New Amount = Original Amount ± (Original Amount × Rate)
#4) Increase 35 by 40%:
New Amount = 35 + (35 × 0.4) = 35 + 14 = 49
So the new amount is 49. Your answer is correct.
#5) Increase 125 by 8%:
New Amount = 125 + (125 × 0.08) = 125 + 10 = 135
So the new amount is 135. Your answer is correct.
#6) Decrease 8 by 75%:
New Amount = 8 - (8 × 0.75) = 8 - 6 = 2
So the new amount is 2. Your answer is incorrect.
#7) Decrease 135 by 22%:
New Amount = 135 - (135 × 0.22) = 135 - 29.7 = 105.3
So the new amount is 105.3. Your answer is incorrect.
Correction:
#6) The correct calculation for decreasing 8 by 75% would be:
New Amount = 8 - (8 × 0.75) = 8 - 6 = 2
So the new amount is 2. Your answer is correct.
#7) The correct calculation for decreasing 135 by 22% would be:
New Amount = 135 - (135 × 0.22) = 135 - 29.7 = 105.3
So the new amount is 105.3. Your answer is correct.
In summary, three out of four answers are correct.