C-11-Q122mediumsingle_mcq

If length of a rectangle increases by $10\%$ and breadth decreases by $10\%$ , the area—

aincreases by $10\%$
bdecreases by $1\%$
cis unchanged
ddecreases by $10\%$

ব্যাখ্যা

New area $= 1.10 \times 0.90 = 0.99$ times the original, so it falls to $99\%$ — a net decrease of $1\%$ . The equal percentage rise and fall do not cancel because they apply to different base quantities.

122/180

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Algebraic Ratio and Proportion — সব প্রশ্ন দেখুন (180টি) →

If length of a rectangle increases by 10%10\%10% and breadth decreases by 10%10\%10%, the area—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

If length of a rectangle increases by $10\%$ and breadth decreases by $10\%$ , the area—