Practice PIEAS Mathematics questions with answers and explanations.
Choose an option to check your answer.
The original total is 8 × 15 = 120.
After removing 22, the total is 98, and 98 ÷ 7 = 14.
Choose an option to check your answer.
The original total age is 4 × 25 = 100 years.
The new total is 5 × 27 = 135, so the new age is 35.
Choose an option to check your answer.
The third decimal digit is 6, so the second decimal digit is rounded up.
Thus, 18.746 becomes 18.75.
Choose an option to check your answer.
The reciprocal of 0.25 is 1 ÷ 0.25.
Since 0.25 = 1/4, its reciprocal is 4.
Choose an option to check your answer.
One third of 3/4 is 1/4 of the full tank.
The remaining amount is 3/4 - 1/4 = 1/2.
Choose an option to check your answer.
One hundred fifty percent equals 1.5.
Multiplying 80 by 1.5 gives 120.
Choose an option to check your answer.
Since 12.5% = 1/8, one eighth of the number is 25.
The whole number is 25 × 8 = 200.
Choose an option to check your answer.
After a 30% discount, 70% of the original price remains.
Thus, the original price is 840 ÷ 0.70 = 1,200.
Choose an option to check your answer.
The greatest common divisor of 24 and 36 is 12.
Dividing both terms by 12 gives 2:3.
Choose an option to check your answer.
Three ratio parts correspond to 24, so one part is 8.
Girls represent five parts, giving 5 × 8 = 40.
Choose an option to check your answer.
The total number of ratio parts is 9, so one part is 720/9 = 80.
The largest share is 4 × 80 = Rs. 320.
Choose an option to check your answer.
Make the common term b equal in both ratios.
Multiplying 4:7 by 2 gives 8:14, so a:b:c = 8:14:15.
