Ahmed increases 40 by $$\(300 \%\)$$. From this list, put a ring around the correct calculation. $$\[ 40 \times 1.300\quad40 \times 3 \quad 40 \times 400 \quad 40 \times 4 \quad 40 \times 300 \]$$
Exam No：0580_w20_qp_21 Year：2020 Question No：9(a)
Answer:
\(40 \times 4\)
Knowledge points:
E1.12.1 Calculate a given percentage of a quantity.
E1.12.2 Express one quantity as a percentage of another.
E1.12.3 Calculate percentage increase or decrease.
E1.12.4 Carry out calculations involving reverse percentages. (e.g. finding the cost price given the selling price and the percentage profit.)
Solution:
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