Advertisements
Advertisements
Question
Express the given ratio in its simplest form: 200 m : 5 km
Solution
200 m : 5 km = 200 m : 5000 m ....(1 km = 1000 m)
`= 200/5000 = (200 div 200)/(5000 div 200)` ..(HCF of 200, 5000 = 200)
`= 1/25 = 1:25`
APPEARS IN
RELATED QUESTIONS
Find the reciprocal ratio of e following :
`1/45 : 1/54`
Two positive numbers are in the ratio 3: 4 and the sum of their squares is 1225. Find the numbers.
Show that the value of x is 11, when `("x"^3 + "3x")/(3"x"^2 + 1) = 341/91`
If the ratio between 8 and 11 is the same as the ratio of 2x - y to x + 2y, find the value of `(7"x")/(9"y")`
The monthly salary of a person is Rs. 12,000 and his monthly expenditure is Rs 8,500. Find the ratio of his:
(i) salary to expenditure
(ii) expenditure to savings
(ii) savings to salary
Find the compound ratio of the following:
If A : B = 4 : 5, B : C = 6 : 7 and C : D = 14 : 15. Find A : D.
Express the given ratio in its simplest form: `6 1/4 : 12 1/2`
If P : Q = `1/2 : 1/3` and Q : R = `1 1/2 : 1 1/3`, find P : R.
In a class, one out of every 5 students pass. If there are 225 students in all the sections of a class, find how many pass?
Which of the following numbers are in continued proportion:
15, 45 and 48
Find the ratio of the first quantity to the second.
30 litres, 24 litres
Find the compounded ratio of: 2 : 3 and 4 : 9
If a : b = 3 : 11, find (15a – 3b) : (9a + 5b). a
If a bus covers 195 km in 3 hours and a train covers 300 km in 4 hours, then the ratio of their speeds is
If the cost of 5 bars of soap is Rs 82.50, then the cost of one dozen such bars is
Find the ratio of:
90 cm to 1.05 m
Choose the correct answer from the given options :
When the number 210 is increased in the ratio 5 : 7, the new number is
Present age of father is 42 years and that of his son is 14 years. Find the ratio of Present age of father to the present age of son.
A carpenter had a board which measured 3 m × 2 m. She cut out a rectangular piece of 250 cm × 90 cm. What is the ratio of the area of cut out piece and the remaining piece?
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.
