Question

A sum of 1,200 increases by 22/3%. The resulting amount then decreases by 25%. Find the final
amount.​

Answer 1

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Increased new value = Original value (1+percentage as fraction)

• 1200 (1+ $\sf{ \frac{22}{3 \times 100} }$)

• 1200 ( 1+ $\sf{{ \cancel \frac{11}{150}} }$) = 1288

Decrease new value = Original value (1- percentage as a fraction)

• 1288 (1- $\sf{{ \cancel \frac{25}{100} }})$

• $\sf{ { \cancel{1288 }}} \times \sf{ \frac{3}{{ \cancel4} } =966 }$

The final amount is 966