Dear Reader,
Below are four basic problems on percentage of numbers.
Question 1
The value of 126% of 7 1/7 is:
a) 9/1 b) 148/7 c) 7/1 d) 151/7
Answer : a) 9/1
Solution :
We have to find, 126% of 7 1/7
= 126% of 50/7
= 126 / 100 x 50 / 7
= 126 /(2 x 7) = 9
126% of 7 1/7 is 9.
Question 2
Find the value of X from 44% of 85 + 12% of 105 - X = 49
a) 1 b) 0 c) 291 d) none of these
Answer : a) 1.
Solution :
Given that, 44% of 85 + 12% of 105 - X = 49
X = 44% of 85 + 12% of 105 - 49
= 44/100 x 85 + 12/100 x 105 - 49
= (44 x 85)/100 + (12 x 105)/100 - 49
= (3740)/100 + (1260)/100 - 49
= 37.4 + 12.6 - 49 = 1.
Hence, the value of X is 1.
Question 3
The value of 430% of 75 + 75% of 430 is:
a) 215 b) 75 c) 645 d) 535
Answer : c) 645
Solution :
We have to find, 430% of 75 + 75% of 430
= 430/100 x 75 + 75/100 x 430
= (430 x 75)/100 + (75 x 430)/100
= 2 x 430 x 75/100
= 64500/100 = 645.
Hence, the required value is 645.
Question 4
The value of 45% of 135 is equal to:
a) 20% of 88 b) 30% of 92 c) 25% of 243 d) none of these
Answer : 25% of 243.
Solution :
Given, 45% of 135 = 45/100 x 135 = 6075/100 = 60.75
From option a, 20% of 88 = 20/100 x 88 = 1760/100 = 17.60
From option b, 30% of 92 = 30/100 x 92 = 2760/100 = 27.60
From option c, 25% of 243 is equals = 25/100 x 243 = 6075/100 = 60.75
Therefore, 45% of 135 = 25% of 243.
Below are four basic problems on percentage of numbers.
Question 1
The value of 126% of 7 1/7 is:
a) 9/1 b) 148/7 c) 7/1 d) 151/7
Answer : a) 9/1
Solution :
We have to find, 126% of 7 1/7
= 126% of 50/7
= 126 / 100 x 50 / 7
= 126 /(2 x 7) = 9
126% of 7 1/7 is 9.
Question 2
Find the value of X from 44% of 85 + 12% of 105 - X = 49
a) 1 b) 0 c) 291 d) none of these
Answer : a) 1.
Solution :
Given that, 44% of 85 + 12% of 105 - X = 49
X = 44% of 85 + 12% of 105 - 49
= 44/100 x 85 + 12/100 x 105 - 49
= (44 x 85)/100 + (12 x 105)/100 - 49
= (3740)/100 + (1260)/100 - 49
= 37.4 + 12.6 - 49 = 1.
Hence, the value of X is 1.
Question 3
The value of 430% of 75 + 75% of 430 is:
a) 215 b) 75 c) 645 d) 535
Answer : c) 645
Solution :
We have to find, 430% of 75 + 75% of 430
= 430/100 x 75 + 75/100 x 430
= (430 x 75)/100 + (75 x 430)/100
= 2 x 430 x 75/100
= 64500/100 = 645.
Hence, the required value is 645.
Question 4
The value of 45% of 135 is equal to:
a) 20% of 88 b) 30% of 92 c) 25% of 243 d) none of these
Answer : 25% of 243.
Solution :
Given, 45% of 135 = 45/100 x 135 = 6075/100 = 60.75
From option a, 20% of 88 = 20/100 x 88 = 1760/100 = 17.60
From option b, 30% of 92 = 30/100 x 92 = 2760/100 = 27.60
From option c, 25% of 243 is equals = 25/100 x 243 = 6075/100 = 60.75
Therefore, 45% of 135 = 25% of 243.
