Question

4.
Determine whether the following ratios are in proportion.
a. 4, 3, 52, 39
b. 30cm:75cm and 50m:125m
c. 150g:2Kg and 10sec:3min​

Answer 1

Step-by-step explanation:

if two ratios are in proportion ,then the product of means = product of extremes

i.e if a:b::c:d, b×c = a×d

a)4,3,52,39

4:3::52:39

3×52=39×4

156=156

hence,they are in proportion

b)30cm , 75cm ,50m , 125m

first convert 50m and 125 m into cm

WE KNOW THAT 1m = 100cm

50m = 50×100 = 5000cm

125m = 125×100 = 12500cm

now,

30cm:75cm::5000cm:12500cm

75×5000=12500×30

375000=375000

hence,they are in proportion.

c)they are not in proportion because they contain different units

THAT IS THE ANSWER

HOPE IT HELPS.....

Answer 2

Answer:

4, 3, 52, 39 - They are in Proportion.

30cm:75cm and 50m:125m - They are in proportion.

150g:2Kg and 10sec:3min - They are not in Proportion

Step-by-step explanation: