Find the value of x in each of the following
(a) 10:20:40:x (b) 4:x::28:63
(c) 9:x::x:81 (d) 30:25::42:x (e)x:12::81:27(f) 7:x::21:30
Answers
Answered by
3
use rule
product of means =product of extremes
so it will be 10* x = 20* 40 so answer will be x = 80
b). 4*63 =×*28 so answer is x=9
c=)×*× = 81 *9 so x = 27
d) 30*x =25*42 so x = 35
e) 12*81 =27*x so x=36
f) 7*30= x*21 so x =10
here * is multiply
Answered by
8
Step-by-step explanation:
A. 10 / 20 = 40 / x
10x = 80
x = 8
B. 4 / x = 28 / 63
28x = 252
x = 9
C. 9 / x = x / 81
x² = 729
x = 27
D. 30 / 25 = 42 / x
30x = 1050
x = 30
E. x / 12 = 81 / 27
27x = 972
x = 36
F. 7 / x = 21 / 30
21x = 210
x = 10
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