Three bells toll at intervals of 9, 12 and 15 minutes respectively. All the three begin to toll at 8 a.m. At what time will they toll together again?

Nationalism spreads when people begin to believe that they are all part of the same nation. The sense of collective belonging came partly through the experience of united struggles. Variety of...

There are so many advertisements in the market. This creates a pressure on the companies and they start showing the advertisements again and again to make it most popular.

Nationalism spreads when people begin to believe that they are all part of the same nation. The sense of collective belonging came partly through the experience of united struggles. Variety...

(b) APEC is the group of 21 countries. APEC is short for Asia Pacific Economic Cooperation. This group of countries span half the surface of the earth and are home...

(c) The minute hand move over in 60 minutes = 360° So, angle made by minute hand in a minute =360°/60 = 6° So, in a period of 2 hours 20 minutes...

Holding Together Federation: (i) Large country decides to divide its power between states and the centre. (ii) Central government tends to be more powerful. (iii) Federating units have unequal power....

(b) 7 minutes 40 seconds 

(i) Metals are sonorous.  (ii) Copper is a very good conductor of electricity.

Answer: 78 minutes Explanation: The more trucks, the more minutes. 42/x=3.5/6.5 ⇒ x = 42.65/35 = 6.13

Ratio of 30 minutes to 45 minutes = 30/45 = 2/3  = 2:3