Question

Construct a word problem on simulatenous linear eqn in two veriables will be value 10 person rupees meters years etc

Answer 1

Answer:

Step-by-step explanation:

The sum of present ages of Timothy and Sarah is 40 years ,Timothy is elder than Sarah by 20 years. Find their present ages

Let the Timothy's present age be x

Let the Sarah's present age be y

According to the first condition

x + y = 40 .......... (1)

According to the second condition

x - y = 20 ........... (2)

Adding equation 2 from 1

x + y = 40

+ x - y = 20

--------------

2x = 60

x = 60/2

x = 30

Substitute x = 30 in equation 1

x + y = 40

30 + y = 40

y = 40 - 30

y = 10

Ans: Timothy's present age is 30 years and Sarah's present age is 10 years.

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