Question

find whether the following ratios are in proportion or not
a)4/10 and 2/5
b)3/21and11/81
c)8/40 and 12/60
d)9/81 and 5/25
PLS SOLVE STEP WISE
​​

Answer 1

$a ) \: proportion\\ \: \: \: \: \: \: \: \: b) \: not \: \: proportion \\ c) \: proportion \\ \: \: \: \: \: \: \: \: d) \: not \: \: proportion$

Step-by-step explanation:

$(a) \: \frac{4}{10} = \frac{2}{5} \\ (b) \: \frac{3}{21} ≠ \frac{11}{81} \\ (c) \: \frac{8}{40} = \frac{12}{60} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: (d) \: \frac{9}{81} = \frac{1}{9} ≠ \frac{5}{25} = \frac{1}{5}$

Answer 2

Answer:

a) True

b)false

c) true

d) false

Step-by-step explanation:

a) 4*5=10*2 ( I.e.20=20)

b) 3*81 not equal to 21*11 ( i.e. 243 not equal to 231)

c) 8*69=40*12 ( i.e 480=480)

d) 9*25 not equal to 81*5 ( i.e 225 not equal to 405)