Question

its
Uber of seats in each row.
Wber of seats in each row is reduced by
uls is increased by 375. How many rows were there?
nnual function of a school, each student gives gift to every other student. If the
of gifts is 1980, find the number of students.
A bus covers a distance of 240 km at a
-40 km at a uniform speed. Due to heavy rain its speed
reduced by 10 km/h and as such it takes two hours longer to cover the total
ance. Assuming the uniform speed to be 'x' km/h, form an equation and solve it to
distan
number of gifts is 19
is 2
25
dedt
(2014
gets reduced by 10
evaluate x.
The speed of a
solv
26
he speed of an express train is x km/h and the speed of an ordinary train
2 km/h less than that of the express train. If the ordinary train takes one hour longer
than the express train to cover a distance of 240 km, find the speed of the expre
(2016)
train.
ess
(2009)
27 A car covers a distance of 400 km at
00 km at a certain speed. Had the speed been 12 km/h
more, the time taken for the journe
Journey would have been 1 hour 40 minutes less. Find
the original speed of the car.
28 An aeroplane covered a distance of 400 km at an average speed of
On the return journey, the speed was increased by 40 km/h. Write down
for the time taken for :
(2012)
at an average speed of x km/h.
1 Dy 40 km/h. Write down an expression​

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

Let the numbers of rows be xso the number of seat in each row will also Be xso the total number of seats in the auditorium=x²when the number ...