101. P can do a piece of work in 9 days. Q is 50% more efficient than P. The number of days it takes for Q to do the same piece of work is
102. Sixteen men can complete a work in fifteen days, twenty-four children can do the same work in twenty days. In how many days will eight men and eight children, complete the same work ?
103. What is a better investment, 4% stock at 120 or 3% stock at 80 ?
104. 20% raise of price followed by a discount of 25% of the raised portion will
105. The sum of the ages of two brothers, having a difference of 8 years between them, will double after 10 years. What is the ratio of the age of the younger brother to that of the elder brother ?
106. On decreasing each side of an equilateral triangle by 2 cm, there is a decrease of 4√3 cm 2 in its area. The length of each side of the triangle is
107. A rectangular tin sheet is 12 cm long and 5 cm broad. It is rolled along its length to form a cylinder by making the opposite edges Just to touch each other. Then the volume of the cylinder is
108. A merchant advertises 10% off on the items bought from his store. The total discount got by a customer who bought a cooker worth 650, a heater worth 500 and a bag worth 65 is
109. If $$2x+3y=\frac{5}{6} and $$xy=\frac{5}{6}$$ then the value of $$8x^{3}+27y^{3}$$ is
110. If $$x^{4}+\frac{1}{x^{4}}=119,$$ then the value of $$x^{3}-$$ $$\frac{1}{x^{3}}$$ is
111. The ratio of two numbers is 3 : 4 and their LCM is 180. The second number is
112. Out of 30 teachers of a school, a teacher of age 60 years retired. In his place another teacher of age 30 years was appointed. As a result, the mean age of the teachers will
113. Average age of A, B and C is 84 years. When D joins them the average age becomes 80 years. A new person, E, whose age is 4 years more than D, replaces A and the average of B, C, D and E becomes 78 years. What is the age of A ?
114. By selling an article for Z 450, a man loses 10%. The gain or loss per cent if he sells it for 540 is
115. A man loses 20 1/2% of his money and after spending 80% of the remainder, he is left with 159. How much did he have at first ?
116. A gun is fired at a distance of 1.34 km from Geeta. She hears the sound after 4 seconds. The speed at which sound travels is
117. If I walk at 5km/hr, I miss a train by 7 minutes. However, if I walk at 6 km/hr I reach the station 5 minutes before the departure of the train. The distance between my house and the station is
118. The compound interest on =1,800 at 10% per annum for a certain period of time is 378. Find the time in years.
119. The value of 204 × 197 is
120. The value of $$((\sqrt[n]{x^2})^\frac{n}{2})^2$$ is
121. $$(\sqrt{3})^{5}\times 9^{2}=3^{n}\times3\sqrt{3}$$ then find the value of n
122. If $$p = 99$$, then the value of $$p (p^{2} + 3p + 3)$$ is
123. $$sin^{6}θ + cos^{6} θ$$ is equal to
124. If tan θ + cot θ = 2, 0 < 0
125. The expression $$1- \frac{cos^2A}{1- sin A}$$
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