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Exercise 1

1) Difference between 55% and 35% of a number is 400.Then what is the number ?
A) 2500
B) 1600
C) 1800
D) 2000

Answer:D) 2000

Explanation:Difference =55% - 35%=20%
20% =400
1%=20
100%=2000

2) 50% of Ram's income is Rs. 1000 then find 80% of Ram's income ?
A) 2500
B) 1600
C) 1800
D) 2000

Answer:B) 1600

Explanation: 50%=1000
1%=1000/50=20
80%=1600

3) If the Ram’s income is 40% more than Hari ’s income. How much % Hari ’s income is less than of Ram’s income ?
A) 200/7
B) 220/7
C) 230/7
D) 240/7

Answer:A) 200/7

Explanation:By using formula
Less % = r/100+r*100
= 40/100+40*100
= 40/140*100
= 200/7

4)The income of Ram and Shyam are Rs.3000 and Rs. 5000 respectively then Shyam’s income is how much% more than Ram ?
A) 56%
B) 60%
C) 66.66%
D) 67.12%

Answer:C) 66.66%

Explanation:By using formula
More % = 5000-3000/3000*100
= 2000/300*100
= 2/3*100
= 200/3
= 66.66%

5)The ratio 10:15 expressed as percent equals to
A) 50%
B) 125%
C) 66.66%
D) None of these

Answer:C) 66.66%

Explanation:It means 10 is percentages of 15 (10/15*66)=66.66






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