Civil Service Exam Reviewer 2026

83. A tank can be filled by pipe A in 4 hours and pipe B in 6 hours. If both are open, how long to fill the tank? 1:32 A. 2.4 hours B. 5 hours C. 2 hours D. 3 hours 84. The sum of three consecutive even integers is 72. What is the largest integer? 3:17 A. 22 B. 26 C. 24 D. 28 85. If 15% of a number is 45, what is 40% of the same number? 4:45 A 120 B. 100 C. 180 D. 150 86. A train 200m long passes a pole in 10 seconds. What is its speed in km/h? 5:46 A. 60 km/h B. 90 km/h C. 80 km/h D. 72 km/h 87. Solve for x: (x+5)÷2=(2x-1)+3 7:10 A 13 B. 11 C. 17 D. 15 88. An investment of P20,000 earns 6% simple interest annually. How much interest is earned in 3 years and 6 months? 8:09 A. P4.200 C. P4,000 B. P3.600 D. P3,800 89. If the ratio of A:B is 2:3 and B:C is 4:5, what is A:C? 9:42 A. 1:2 B. 8:15 C. 2:5 D. 6:10 90. The price of a laptop increased by 20%, then decreased by 10%. What is the net percentage change? 10:58 A. 10% increase B. 5% decrease C. 8% increase D. 12% increase 91. A cube has a surface area of 150 sq cm. What is its volume in cubic cm? 11:53 A 125 B. 100 C. 75 D. 150 92. What is the remainder when (3)^15 is divided by 5? 12:57 A.1 B. 4 C. 3 D. 2 93. A worker can paint a room in 8 hours. With an assistant, they finish in 3 hours. How long for the assistant alone? 14:46 A. 5 hours B. 4.8 hours C. 5.5 hours D. 6 hours 94. Simplify: [(24) / (2)]^3 16:05 A 16 B. 32 C. 256 D. 64 95. What is the probability of rolling a sum of 7 with two dice? 16:53 A 1/6 B. 1/12 C. 1/9 D. 1/36 96. If x - y = 4 and x - y = 40, what is the value of x + y? 17:50 A 10 B. 8 C. 12 D. 14 97. Find the next number: 1, 4, 13, 40, 18:44 A. 121 B. 120 C. 110 D. 130 98. How many degrees are in each interior angle of a regular hexagon? 19:27 A. 108° B. 120 C. 135° D. 150° 99. A car travels at 60 km/h for the first 30 km and 40 km/h for the next 30 km. Average speed? 20:11 A. 50 km/h C. 45 km/h B. 48 km/h D. 52 km/h 100. If 2^x = 32, what is x²? 22:13 A 25 B. 16 C. 10 D. 36 101. Solve for x: log_2 (x) = 5 22:48 A 10 B. 25 C. 32 D. 64 102. The area of a circle is 154 sq cm. What is its circumference (π≈ 22/7)? 23:21 A. 44 cm B. 22 cm C. 88 cm D. 66 cm 103. A cyclist travels 45 km uphill in 3 hours, then returns the same 45 km downhill in 1.5 hours. What is the average speed for the entire trip? 24:56 A. 20 km/h B. 22.5 km/h C. 25 km/h D. 18 km/h 104. A shirt originally priced at P850 is on sale for 15% off. How much is the discounted price? 26:04 A. P700 B. P722.50 C. P744.50 D. P127.50 105. A recipe calls for flour and sugar in the ratio 5:2. If 10 cups of flour are used, how many cups of sugar are needed? 28:25 A. 5 B. 6 C. 4 D. 3 106. Maria is twice as old as her son. Five years ago, she was three times as old as him. What is Maria's current age? 28:53 A. 25 B. 30 C. 18 D. 20 107. Pipe A fills a pool in 5 hours and pipe B fills it in 10 hours, but a drain empties it in 20 hours. If all three are open at once, how long will it take to fill the pool? 30:24 A. 4 hours B. 6 hours C. 5 hours D. 8 hours 108. How much principal will earn P1,200 in interest over 2 years at 8% simple interest per annum? 31:45 A. P6,000 B. P7,500 C. P9,600 D. P8,000. 109. Find the missing number: 5, 11, 23, 47, 33:25 A 90 B. 94 C. 95 D. 96 110. If 3x+7=2x+19, what is the value of x? 34:00 A 10 B. 14 C. 8 D. 12 111. A rectangular garden is 16 m long and 12 m wide. What is the length of its diagonal? 34:28 A. 20 m B. 18 m C. 22 m D. 24 m 112. A bag contains 4 red balls, 5 blue balls, and 3 green balls. What is the probability of picking a blue ball at random? 35:51 A. 1/3 B. 5/12 C. 5/9 D. 1/4 113. A town's population grew from 8,000 to 9,200 in one year. What was the percentage increase? 36:22 A 12% B. 13% C. 15% D. 20% 114. Two cyclists start from the same point and travel in opposite directions, one at 18 km/h and the other at 22 km/h. After how many hours will they be 100 km apart? 37:35 A. 2 hours B. 3 hours C. 2.25 hours D. 2.5 hours 115. How many liters of a 70% acid solution must be mixed with 10 liters of a 10% acid solution to obtain a 30% acid solution? 38:46 116. Simplify: (3^3) × (3^2) / 3^4 40:27 117. Find the next term: 2, 6, 18, 54, 41:16 118. After spending 2/5 of her money on groceries and 1/4 of the remainder on transportation, Ana has P540 left. How much money did she start with? 41:35 119. What is the greatest common factor (GCF) of 48 and 60? 43:19 120. A store offers a 10% discount, then an additional 5% off the discounted price for members. What is the total percentage discount for members? 44:07 121. The average of five consecutive odd numbers is 51. What is the largest number? 45:39 122. Statement: 46:36 All A are B. SOme B are C. No C is D. Which must be true? A. All A are C B. Some A are D C. Not determined D. No A is D.