Suppose you have $140 in a bank account. You start saving $5 per week. Your friend has $30 in his bank account and saves $10 per week. After how many weeks will you and your friend have the same amount of money?

-6 is the correct option from the above given options

answer: i don't understand. what are the options

step-by-step explanation:

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.