Which quantities in the previous question vary inversely with each
other?
(a) x and y (b) p and q (c) r and s (d) u and v
By travelling at a speed of 48 kilometres per hour, a car can finish a
certain journey in 10 hours. To cover the same distance in 8 hours,
the speed of the car should be
(a) 60 km/h (b) 80 km/h (c) 30 km/h (d) 40 km/h
A truck needs 54 litres of diesel for covering a distance of 297 km.
The diesel required by the truck to cover a distance of 550 km is
(a) 100 litres (b) 50 litres (c) 25.16 litres (d) 25 litres
The number of teeth and the age of a person vary
(a) directly with each other.
(b) inversely with each other.
(c) neither directly nor inversely with each other.
(d) sometimes directly and sometimes inversely with each other.
Assuming land to be uniformly fertile, the area of land and the yield
on it vary
(a) directly with each other.
(b) inversely with each other.
(c) neither directly nor inversely with each other.
(d) sometimes directly and sometimes inversely with each other.
Both x and y vary inversely with each other. When x is 10, y is 6,
which of the following is not a possible pair of corresponding values of
x and y?
(a) 12 and 5 (b) 15 and 4 (c) 25 and 2.4 (d) 45 and 1.3
Both u and v vary directly with each other. When u is 10, v is 15,
which of the following is not a possible pair of corresponding values of
u and v?
(a) 2 and 3 (b) 8 and 12 (c) 15 and 20 (d) 25 and 37.5
Under the condition that the temperature remains
constant, the volume of gas is inversely proportional to
its pressure. If the volume of gas is 630 cubic centimetres
at a pressure of 360 mm of mercury, then what will be
the pressure of the gas if its volume is 720 cubic
centimetres at the same temperature?
If two cardboard boxes occupy 500 cubic centimetres space, then how much space is required to keep 200 such boxes?
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