Advertisements
Advertisements
Question
If A : B = 7 : 5 and B : C = 7 : 5, then A : C is ______.
Options
25 : 49
49 : 25
1
15 : 14
Advertisements
Solution
If A : B = 7 : 5 and B : C = 7 : 5, then A : C is 49 : 25.
Explanation:
Given A : B = 7 : 5 = `7/5`
And B : C = 7 : 5
`\implies B/C = 7/5`
∴ `A/C = A/B xx B/C`
= `7/5 xx 7/5`
= `49/25`
`\implies` A : C = 49 : 25
APPEARS IN
RELATED QUESTIONS
Convert the following percentage to fractions and ratio:
0.25%
If `"a"/"b" = "c"/"d"`, show that: `(a^3c + ac^3)/(b^3d + bd^3) = ("a" + "c")^4/("b" + "d")^4`
A bag contains ₹ 1,600 in the form of ₹10 and ₹20 notes. If the ratio between the numbers of ₹10 and ₹20 notes is 2 : 3; find the total number of notes in all.
Find the third proportional of `1/7 "and" 3/14`
Find the ratio of the first quantity to the second.
125 cm, 1 metre
Find the compounded ratio of: (a – b) : (a + b), (a + b)2 : (a2 + b2) and (a4 – b4) : (a2 – b2)2
Mr. Sahai and his wife are both school teachers and earn Rs 16800 and Rs 10500 per month respectively. Find the ratio of
(i) Mr. Sahai's income to his wife's income;
(ii) Mrs. Sahai's income to her husband's income;
(iii) Mr. Sahai's income to the total income of the two.
Find the ratio of 90 cm to 1.5 m.
The ratio of the perimeter of the boundary of the shaded portion to the perimeter of the whole figure is ______.
There are 20 girls and 15 boys in a class. What is the ratio of number of girls to the total number of students in the class?
