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Direct & Inverse Proportions

If 12 pumps can empty a reservoir in 20 hours, then time required
by 45 such pumps to empty the same reservoir is ______ hours.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

Two quantities are said to vary ______ with each other if an increase
in one causes a decrease in the other in such a manner that the
product of their corresponding values remains constant.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

Two quantities are said to vary ______ with each other if they increase
(decrease) together in such a manner that the ratio of their
corresponding values remains constant

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

x and y are said to vary directly with each other if for some positive
number k, ______ =k

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

Both x and y are said to vary ______ with each other if for some
positive number k, xy = k.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

When two quantities x and y are in _______ proportion or vary ______
they are written as x ∝ 1/ y.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

When two quantities x and y are in ______ proportion or vary ______
they are written as x ∝ y.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

If xy = 10, then x and y vary ______ with each other

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

If x = 5y, then x and y vary ______ with each other.

04/11/2024

Mathematics

8th

Direct & Inverse Proportions

Both x and y vary directly with each other and when x is 10, y is 14,
which of the following is not a possible pair of corresponding values
of x and y?
(a) 25 and 35 (b) 35 and 25 (c) 35 and 49 (d) 15 and 21

04/11/2024

Mathematics

8th