Find the maximum marks and the percentage of
24. The sides of a rectangle are 20 cm and 15 cm. If each side is increased by 20%, find
the percentage increase in the area.
75. Imran giyes 1% of his monthly income to his two sons as pocket money. The elder
non
Chin choro If he sayes
Answers
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24.Length 20cm
Breadth 15cm
Area l×b
20×15=300cm²
New length =20+20/100×20
=24cm
new breadth =15+20/100×15
=18cm
New area 24×18
=432cm²
%age of area increased=(432-300)/300×100
=132/300×100
=44%
75.Let father's monthly income be x .
Now
Amount is given To his Sons
= 1 % of his salary = x × 1/100 = x/100
again, Amount is Received by elder Son = 80% of x/100 = 80/100 × x/100
= 80x/10000 = 8x/1000 = x/125
it is given that he spends 80% of his share
So Amount saved by elder son = 20%
so, amount saved by elder son = 20% of amount gained by elder son
= 20 /100 × x/125
= x/625
a/c to question, amount saved by elder son =20 rs.
or, x/625 = 20
or, x = Rs 12,500
PLEASE PLEASE MARK ME AS BRAINLIEST AND GIVE THANKS AND 5 STAR PLEASE PLEASE BROTHER PLEASE FAST....I HAVE CORRECTLY ANSWERED BOTH OF YOUR QUESTIONS...PLEASE BRO...PLEASE....