Mathematics MCQs

Rent and food use 55%, leaving 45%.
Forty-five percent of Rs. 60,000 is Rs. 27,000.

If n ≡ 4 mod 7, then 2n ≡ 8 mod 7.
The remainder of 8 divided by 7 is 1.

At 6:00, the hands point in opposite directions.
Opposite rays form a straight angle of 180°.

Compare Tuesday sales with Monday: 210/150 × 100.
This equals 140%.

Add 5 to both sides to get 3x > 15.
Dividing by 3 gives x > 5.

Adding the equations gives twice the larger number: 50 + 14 = 64.
Dividing by 2 gives 32.

There are 12 ratio parts, so one part is 30.
Rural respondents are 5 × 30 = 150.

Dividing an inequality by a negative number reverses the sign.
Thus, x > -4.

Let the son's age be x and father's age 3x.
Then 3x + 10 = 2(x + 10), giving x = 10.

Profit is Rs. 0.6 million.
As a percentage of revenue, 0.6/2.4 × 100 = 25%.

Absolute value gives distance from zero.
Both 7 and -7 are 7 units from zero.

Let tens digit be a and units digit b; then a + b = 11 and 9(b - a) = 27.
So b - a = 3, giving a = 4 and b = 7.