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Mathematics Mcqs

A surn of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B’s share ?

Mathematics Mcqs, Ratio and Proportion /
A surn of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B’s ?

A. Rs. 500
B. Rs. 1500
C. Rs. 2000
D. None of these

A surn of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B’s share ? Read More »

Mathematics Mcqs, Ratio and Proportion

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage iikcrease in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ?

Mathematics Mcqs, Ratio and Proportion /
The ratio of the number of boys and girls in a college is 7 : 8. If the percentage iikcrease in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ?

A. 8 : 9
B. 17 : 18
C. 21 : 22
D. Cannot be determined
Originally, let the number of boys and girls in the college be 7x and 8x respectively. Their increased number is (120% of 7x) and (110% of 8x), i . e . ( 120/100 X 7x ) and ( 110/100 X 8x ) i . e . 42x/5 and 44x/5 Required ratio = 42x/5 : 44x/5 = 21 : 22

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage iikcrease in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ? Read More »

Mathematics Mcqs, Ratio and Proportion

The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is :__________?

Mathematics Mcqs, Ratio and Proportion /
The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is :__________?

A. 20
B. 30
C. 48
D. 58
Let the three parts be A, B, C Then,
A : B = 2 : 3 and B : C = 5 : 8 (5 X 3/5 ) : (8 X 3/5 ) = 3 : 24/5
A:B:C= 2 : 3 : 24/5 10:15:24
B = (98 X 15/49 ) = 30.

The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is :__________? Read More »

Mathematics Mcqs, Ratio and Proportion

If the number obtained on interchanging the digits of a two-digit number is 18 more than the original number and the sum of the digits is 8, then what is the original number ?

Mathematics Mcqs, Problems on Numbers /
If the number obtained on interchanging the digits of a two-digit number is 18 more than the original number and the sum of the digits is 8, then what is the original number ?

A. 26
B. 35
C. 53
D. Cannot be determined

If the number obtained on interchanging the digits of a two-digit number is 18 more than the original number and the sum of the digits is 8, then what is the original number ? Read More »

Mathematics Mcqs, Problems on Numbers

A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is :_________?

Mathematics Mcqs, Problems on Numbers /
A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is :_________?

A. 18
B. 24
C. 42
D. 81

A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is :_________? Read More »

Mathematics Mcqs, Problems on Numbers

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?

Mathematics Mcqs, Problems on Numbers /
The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?

A. 20
B. 30
C. 40
D. None of these

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________? Read More »

Mathematics Mcqs, Problems on Numbers

Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is :___________?

Mathematics Mcqs, Problems on Numbers /
Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is :___________?

A. 6
B. 12
C. 18
D. None of these
Let the numbers be 3x, 4x and 6x.
Then, 3x x 4x x 6x = 1944 72×3 = 1944
x3 = 27 ,=> x = 3
∴ Largest number = 6x = 18,

Three numbers are in the ratio of 3 : 4 : 6 and their product is 1944. The largest of these numbers is :___________? Read More »

Mathematics Mcqs, Problems on Numbers

The sum of two numbers is 25 and their differenee is 13. Find their product :

Mathematics Mcqs, Problems on Numbers /
The sum of two numbers is 25 and their differenee is 13. Find their product :

A. 104
B. 114
C. 315
D. 325
Let the numbers be x and y. Then, x + y = 25 and x – y = 13.
4xy = (x + y)2 – (x – y)2 = (25)2 – (13)2 = 625- 169 = 456
=> xy = 114.

The sum of two numbers is 25 and their differenee is 13. Find their product : Read More »

Mathematics Mcqs, Problems on Numbers