Question

Saket bought two pens for 850 each. He sold one at a gain of 7% and other at loss of 3 percent find
his loss or gain percent in whole transaction.
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Answer 1

The percentage change is calculated when there is a change in the value of a quantity over a certain period of time. The percentage change is calculated as a percentage band a percentage decrease. To calculate the percentage change, we must divide the change in value by the original value and then multiply the obtained value by 100.

Percent change = [(change in value)/original value] × 100

Where Value Change = New Value – Original Value

Percentage increase

Percentage increase means the percentage change in the value of a quantity as it increases over a period of time. It is calculated by subtracting the original value from the new value, dividing it by the original value, and then multiplying the resulting value by 100. The formula for the percentage increase is given as,

Percentage increase = $[(new value - original value)/original value] * 100$

Note: If the value increases by x%, then the new value is $(100 + x)$% of the original amount.

Percentage decrease

Percent decrease means the percentage change in the value of a quantity as it decreases over a period of time. It is calculated by subtracting the new value from the original value, dividing it by the original value, and then multiplying the resulting value by 100. The formula for the percentage reduction is given as,

Percent Reduction =$[(Original Value - New Value)/Original Value] * 100$

Note: If the value is reduced by x%, then the new value is $(100 -x)$% of the original amount.

Given:

Saket bought two pens for $850$ each.

He sold one at a gain of $7$% and the other at a loss of $3$%

To find:

His loss or gain in the whole transaction

Solution:

Total gain=$(850*7)/100$

Hence total gain will be=$59.5$

Total loss=$(850*3)/10$

Hence total loss will be=$25.5$

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