Advertisements
Advertisements
Question
Ratio of the distance of the school from A’s home to the distance of the school from B’s home is 2 : 1.
(i) Who lives nearer to the school?
(ii) Complete the following table:
Advertisements
Solution
Ratio of the distance of the school from A’s home to the distance of the school from B’s hence = 2 : 1
(i) B lives nearest to the school
(ii) Let A’s home is 2x km from school and B’s home is x km
Distance of school from A’s home = 2 x Distance of school from B’s home
⇒ If A lives at a distance of 4 km, then B lives at a distance of = `1/2xx4` = 2 km
⇒ If B lives at a distance of 9 km then A lives at a distance of = 2 × 9 = 18 km
⇒ If A lives at a distance of 8 km then B lives at a distance =`1/2xx8` = 4 km
⇒ If B lives at a distance of 8 km, then A lives at a distance = 2 × 8 = 16 km
⇒ If A lives at a distance of 6 km, then B lives at a distance = `1/2xx6` = 3 km
APPEARS IN
RELATED QUESTIONS
If 2a = 3b and 4b = 5c, find: a : c.
Two positive numbers are in the ratio 3 : 5 and the difference between their squares is 400. Find the numbers.
If m : n = 3 : 8, find the value of (3m+2n) : (5m+n)
Find the compound ratio of the following:
If A : B = 4 : 5, B : C = 6 : 7 and C : D = 14 : 15. Find A : D.
If `x/(b + c - a) = y/(c + a - b) = z/(a + b - c)` then show that (b - c)x + (c - a)y + (a - b) z = 0.
Two numbers are in the ratio 5: 7. Their difference is 10. Find the numbers.
If (4x + 3y) : (3x + 5y) = 6 : 7, find x, if y = 10
A certain sum was divided among A, B and C in the ratio 7 : 5 : 4. If B got Rs 500 more than C, find the total sum divided.
4 : 7 = 20 : 35
In a college, out of 4320 students, 2300 are girls. Find the ratio of number of girls to the total number of students.
