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प्रश्न
In the example below, find the ratio of the first number to the second.
24, 56
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उत्तर
24 : 56
`= 24/56`
`= (24 div 8)/(56 div 8)` (HCF of 24 and 56 = 8)
`= 3/7`
`= 3 : 7`
संबंधित प्रश्न
Find `x/y`; when x2 + 6y2 = 5xy.
The bus fare between two cities is increased in the ratio 7 : 9. Find the increase in the fare, if:
- the original fare is Rs. 245;
- the increased fare is Rs. 207.
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If r2 = pq, show that p : q is the duplicate ratio of (p + r) : (q + r).
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Express the following ratios in its simplest form :
1 hour: 45 minutes
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12, 18 and 27
Find the ratio of the first quantity to the second.
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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.
