X has twice as much money as that of Y and Y has 50% more money than that of Z. If the average money of all of them is R…

6 c.c. of a 20% solution of alcohol in water is mixed with 4 c.c. of a 60% solution of alcohol in water. The alcoholic s…

In an examination, 30% and 35% students respectively failed in History and Geography while 27% students failed in both s…

1.14 expressed as a per cent of 1.9 is:

A man ordered a length of rope by telephone from his nearest hardware shop. But when a worker in the shop brought the ro…

In a college, 40% of the students were allotted group A, 75% of the remaining were given group B and the remaining 12 st…

If radius of a circle is increased by 5%, then the increase in it's area is :

A student took five papers in an examination, where the full marks were the same for each paper. His marks in these pape…