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Direct & Inverse Proportions

In a hostel of 50 girls, there are food provisions for 40 days. If 30
more girls join the hostel, how long will these provisions last?

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

At a particular time, the length of the shadow of Qutub Minar whose
height is 72 m is 80 m. What will be the height of an electric pole,
the length of whose shadow at the same time is 1000 cm?

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg
of iron of the same quality?

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

If 25 metres of cloth costs Rs 337.50, then
(i) What will be the cost of 40 metres of the same type of cloth?
(ii) What will be the length of the cloth bought for Rs 810?

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

A car travels a distance of 225 km in 25 litres of petrol. How many
litres of petrol will be required to cover a distance of 540 kilometres
by this car?

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

If Naresh walks 250 steps to cover a distance of 200 metres, find the
distance travelled in 350 steps

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

Find the values of x and y if a and b are in inverse proportion:
a. 12 x 8
b. 30 5 y

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

The mass of an aluminium rod varies directly with its length. If a
16 cm long rod has a mass of 192 g, find the length of the rod whose
mass is 105 g.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

If a deposit of Rs 2,000 earns an interest of Rs 500 in 3 years, how
much interest would a deposit of Rs 36,000 earn in 3 years with the
same rate of simple interest?

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

It is given that l varies directly as m.
(i) Write an equation which relates l and m.
(ii) Find the constant of proportion (k), when l is 6 then m is 18.
(iii) Find l, when m is 33.
(iv) Find m when l is 8

04/11/2024

Mathematics

8th