For the following questions answer them individually
The circumference of the two circles is 77 cm and 154 cm respectively. What is the difference between their radii?
On Selling a watch at 4/5 of the marked price there is a loss of 10 percent. What will be the ratio of the marked price and cost price of the watch?
A car left 60 minutes early than the scheduled time but in order to reach its destination 280 km away in time, it has to slow it, usual speed by 14 km/hr. What is the usual speed of the car?
The line chart given below shows the number of girls in 7 schools.
Number of girls in S1 is how much percent less than the number of girls in S2?
1/2 of a certain sum is lent at 20 percent rate of interest, 2/5 of the remaining sum is lent at 25 percent rate of interest. The remaining sum is lent 10 percent rate of interest. If the simple interest received on the total sum for 2 years is Rs.360, then what is the sum?
Average weight of 15 persons is 30 kg, A new person whose weight is 78 kg joins the group. What will be the average weight of 16 persons?
Ram purchases two watches for Rs.3.500. By selling one watch at a profit of 25 percent and the other at a loss of percent he neither earns profit nor suffers loss to the whole transaction. What is the cost price of each watch?
The following bar graph shows the sales of books (in thousands) from 3 branches of a company in three consecutive years 2018, 2019 and 2020.
What is the ratio of the total sales of branch A for the year 2018 to the total sales of branch C for the year 2020?