For the following questions answer them individually
The table given below shows the cost price and selling of four different articles.
What is the difference between the average selling price and average cost price of all the articles?
Two stations R and S are 400 km apart from each other. A train leaves from R to S and simultaneously another train leaves from S to R. Both trains meet after 10 hours. If the speed of the first train is 4 km/hr more than the second train, then what is the speed of the slower train?
If $$\tan(\alpha + \beta) = a, \tan(\alpha - \beta) = b$$, then the value of $$\tan 2 \alpha$$ is:
P and Q are two alloys of aluminium and copper. The ratios of aluminium and copper in P and Q are 5 : 11 and 3 : 5, respectively. If a third alloy is formed by mixing alloys P and Q in the ratio of 1 : 3, then aluminium is what percentage (rounded off to the nearest integer) of the copper in the third alloy ?
A certain sum of money lent at simple interest amounts to ₹1,200 in 2 years and ₹1,600 in 4 years. The rate per cent per annum is:
If the nine-digit number 3422213AB is divisible by 99, then what is the value of 2A + B?
The pie chart given below shows the number of boys in 8 schools. The total number of boys in all these 8 school is 5000. Number of boys in a particular school is shown as a percent of total number of boys in all these 8 schools.
What is the ratio of total number of boys in B, D and E to the total number of boys in A, C and F?
The pie chart given below shows the number of car sold by 8 different companies. The total number of car sold by all these 8 companies are 5,000. Number of cars sold by a particular company is shown as a percent of total number of cars sold by all these 8 companies.
What is the ratio of total central angle formed by sector R and S to the total central angle formed by sector U and V?
In a $$\triangle ABC, \angle B + \angle C = 110^\circ$$, then find the measure of $$\angle A$$.