Math, asked by hammadanwar77, 5 months ago

Kathy is twice as old as Kelly who is 5 yrs younger
than Joshua. Four years ago Kathy was thrice as old
as Kelly. How old is Joshua?
A) 10
B) 11
C) 3
D) 13
ans,is 13 need solution plz dont give irrevalent ans ​

Answers

Answered by obikgamer
0

Answer:

Its D

Step-by-step explanation

Lets

Kathy = a, Kelly = e and Joshua = j

Now(present):

a = 2 e and e = j - 5

a = 2(j - 5) = a = 2j - 10

4yrs ago(past):

a - 4  = 3 (e - 4)

for Joshua e - 4 = j - 5 - 4 = j - 9

replace e - 4 with j - 9

a - 4 = 3 (j - 9)

a = 3j - 27 +4 = 3j -23

Compare a = 2j-10 and a = 3j -23

3j - 23 = 2j - 10

3j-2j = 23-10

j = 13

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