NET Mathematics MCQs

The original total age is 4 × 25 = 100 years.
The new total is 5 × 27 = 135, so the new age is 35.

The third decimal digit is 6, so the second decimal digit is rounded up.
Thus, 18.746 becomes 18.75.

The reciprocal of 0.25 is 1 ÷ 0.25.
Since 0.25 = 1/4, its reciprocal is 4.

One third of 3/4 is 1/4 of the full tank.
The remaining amount is 3/4 - 1/4 = 1/2.

One hundred fifty percent equals 1.5.
Multiplying 80 by 1.5 gives 120.

Since 12.5% = 1/8, one eighth of the number is 25.
The whole number is 25 × 8 = 200.

After a 30% discount, 70% of the original price remains.
Thus, the original price is 840 ÷ 0.70 = 1,200.

Let the number be x, so 0.40x = 72.
Dividing by 0.40 gives x = 180.

Percent means per hundred.
Thus, 3.5% = 3.5 ÷ 100 = 0.035.

The required percentage is 45/250 × 100.
This equals 18%.

The score fraction is 42/50.
Multiplying by 100 gives 84%.

Starting from 100, a 10% increase gives 110.
A 10% decrease from 110 gives 99, which is 1% lower.