LAT Mathematics MCQs

After a 20% increase, the quantity becomes 120% of the original.
The required reduction is 20/120 × 100 = 16⅔%.

Convert each value to decimals: 5/8 = 0.625, 0.60 = 0.60, 59% = 0.59, and 3/5 = 0.60.
Therefore, 5/8 is the greatest.

Multiply 2 × 3 = 6 and count three decimal places in total.
The product is 0.006.

Multiply both numbers by 10 to remove decimals.
Then 48 ÷ 6 = 8.

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.

The decrease is Rs. 75.
The percentage decrease is 75/500 × 100 = 15%.

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