75% of 400
A student has to secure 35% marks to pass. He gets 650 marks and fails by 50 marks. Find the maximum marks.
The correct option is C.
Pass marks is 650+50=700
which is 35 % of the total marks
let x be the max marks
then 35% of x = 700
x = 2000
A student has to secure 35% marks to pass. He gets 650 marks and fails by 50 marks. Find the maximum marks.
A student who gets 36% of marks, fails by 32 marks. Another candidate who gets 45% marks gets 40 marks more than are necessary for passing. Find the maximum marks.
At an election a candidate secures 40% votes and is defeated by the other candidate by a majority of 2020 votes. Find the total number of votes polled.
At an election a candidate who secured 40% votes and is defeated by the other candidate by a margin of 300 votes. Find the total number of votes recorded.
The correct option is C.
Vote secured by defeated candidate = 40%
vote secured by winner candidate= 100-40=60%
Difference of vote% = 60-40=20%
So, 20% = 300. 100% = 300×100/20 = 1500
In an election a candidate got 35% of votes but was defeated by other candidate by 750 votes. Find the total number of votes polled.
Rajesh is 40% older thanNeeraj. Find how much % is Neeraj younger than Rajesh.
The population of a town increases at a rate of 4% per annum. At present it is 37500. What will it be after 2years.
The correct option is D.
P{ (1+R/100)n }
= 37500{ (1+4/100)2 }
= 37500{ (1+1/25)2 }
= 37500{ (26/25)2 }
= 37500{ (676/625) }
= 676*60
= 40560
The population of a town increases at a rate of 4% per annum. At present it is 37500. What will it be after 2years.
The price of milk has risen by 75%. Find by how much percent a house holder must reduce his consumption so as not to increase his expenditure.
Price of sugar has increased by 60%. How much % a house holder must reduce his consumption of sugar so as not to increase the expenditure?
The correct option is C as
Let original price of a unit be Rs. 100
Increased price = Rs. 160
Reduction on Rs. 160 = Rs. 60
Reduction on Rs. 100 = 60/160 * 100 = 37.5 %
Petrol prices are reduced by 20%. Find by how much percent a vehicle owner must increase his consumption of petrol so as not to decrease his expenditure of petrol.
Option (b) 25% is correct.
Explanation:-
{ Let petrol price = 100
After deduction = 80
Petrol consumption = 100
Petrol consumption after deduction:-
= x
Total expenditure => 100*100 = 80*x
=> x = 10000/ 80
=> x = 125
Consumption increased = 125-100
=> 25
Percentage increased = 25%
A reduction of 20% in the price of rice enables a man to buy 10 kg more rice for Rs. 1600. Find the reduced price of rice per kg.
A reduction of 20% in the price of rice enables a man to buy 10Kg more rice for Rs. 1600. Find the reduced price of per Kg rice.
Reduction in Rupees = 1600 x 20/100 = Rs. 320
With this Rs. 320 he can buy 10 Kg of Rice now
Reduced price per Kg = Rs. 320/10 = Rs. 32
A reduction of 20% in the price of apples enables Sumeer to purchase 16 apples more for Rs. 320. Find the reduced price of 10 apples.
Reduction in Rupees = 320 x 20/100
= 64
With this Rs. 64 Sumeer can buy 16 Apples
Reduced price of 16 Apples = Rs. 64
Reduced price of 1 Apple = 64/16 = 4
Reduced price of 10 Apples = 4 x 10
= Rs 40
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