Advertisements
Advertisements
Question
Make set of all possible proportions from the numbers 15, 18, 35 and 42.
Advertisements
Solution
The possible proportions that can be made from the numbers 15, 18, 35 and 42 are
(i) 15 : 35 :: 18 : 42
(ii) 42 : 18 :: 35 : 15
(iii) 42 : 35 :: 18 : 15
(iv) 15 : 18 :: 35 : 42
RELATED QUESTIONS
Which of the Following Ratio is Greater ?
3 : 5 and 2 : 11
Which of the following ratio is greater ?
`5/2 : 15/4` and `5/3 : 11/6`
Express the following ratios in its simplest form :
3 m : 90 cm
The weekly expenses of a boy have increased from ₹ 1,500 to ₹ 2,250. Find the ratio of:
(i) increase in expenses to original expenses.
(ii) original expenses to increased expenses.
(iii) increased expenses to increase in expenses.
Find the fourth proportional of 5, 9 and 45
Reema has 24 notebooks and 18 books. Find the ratio of notebooks to books.
Neelam’s annual income is Rs. 288000. Her annual savings amount to Rs. 36000. The ratio of her savings to her expenditure is ______.
Which pair of ratios are equal? And why?
`8/4, 2/1`
In the following figure, what is the ratio of the areas of
- shaded portion I to shaded portion II?
- shaded portion II to shaded portion III?
- shaded portions I and II taken together and shaded portion III?
A doctor reports blood pressure in millimeters of mercury (mm Hg) as a ratio of systolic blood pressure to diastolic blood pressure (such as 140 over 80). Systolic pressure is measured when the heart beats, and diastolic pressure is measured when it rests. Refer to the table of blood pressure ranges for adults.
| Blood Pressure Ranges | |||
| Normal | Prehypertension | Hypertension (Very High) |
|
| Systolic | Under 120 mm Hg | 120-139 mm Hg | 140 mm Hg and above |
| Diastolic | Under 80 mm Hg | 80-89 mm Hg | 90 mm Hg and above |
Manohar is a healthy 37 years old man whose blood pressure is in the normal category.
- Calculate an approximate ratio of systolic to diastolic blood pressures in the normal range.
- If Manohar’s systolic blood pressure is 102 mm Hg, use the ratio from part (a) to predict his diastolic blood pressure.
- Calculate the ratio of average systolic to average diastolic blood pressure in the prehypertension category.
