Advertisements
Advertisements
Question
Divide 64 cm long string into two parts in the ratio 5 : 3.
Solution
Sum of ratios = 5 + 3 = 8
∴ first part = `5/8` of 64 cm = 40 cm
Second part = `3/8` of 64 cm = 24 cm
APPEARS IN
RELATED QUESTIONS
Find triplicate ratio of 1 : 3
Find the ratio of the following in the simplest fcrm:
432 and 120
Find the sub-triplicate ratio of the following :
125a3 : 343b6
Which of the Following Ratio is Greater ?
3 : 5 and 2 : 11
What quantity must be added to each term of the ratio 19 : 51 to make it equal to 3 : 7 ?
A field is 80 m long and 60 m wide. Find the ratio of its width to its length.
If a: b with a ≠ b is the duplicate ratio of a + c: b + c, show that c2 = ab.
Express the given ratio in its simplest form: 40 kg : 1 quintal
Express the given ratio in its simplest form: 3 hours : 1 day
Is divided between A and B in such a way that A gets half of B. Find :
(i) the ratio between the shares of A and B.
(ii) the share of A and the share of B.
Rohit goes to school by car at 60 km per hour and Manoj goes to school by scooty at 40 km per hour. If they both live in the same locality, find the ratio between the time taken by Rohit and Manoj to reach school.
Which of the following numbers are in continued proportion:
15, 45 and 48
If (4x + 3y) : (3x + 5y) = 6 : 7, find x, if y = 10
Shubham’s age today is 12 years and his father’s is 42 years. Shubham’s mother is younger than his father by 6 years. Find the ratio of Shubham’s age to his mother’s age when Shubham was 10 years old.
If `a/b = c/d = e/f`, prove that each ratio is `[(2a^3 + 5c^3 + 7e^3)/(2b^3 + 5d^3 + 7f^3)]^(1/3)`
Which ratio is larger 10 : 21 or 21 : 93?
In a year, Ravi earns Rs 360000 and paid Rs 24000 as income tax. Find the ratio of his income to income tax.
In a floral design made from tiles dimensions 40 cm by 60 cm (See figure), find the ratios of the area of the shaded portion to the area of the unshaded portion.
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.
Two numbers are in the ratio 5 : 8. If 10 is subtracted from each number, the ratio becomes 4 : 7. The numbers are ______.
