Arjun is twice as old as Shreya. If five years ago his age was three times Shreya's age, then Arjun's present age is

Arjun is 20 years old and Shreya is 10 years old.

Step-by-step explanation:

5 YEARS AGO-

Arjun: 2x-5

Shreya: x-5

NOW-

Arjun: 2x

Shreya: x

EQUATION-

2x-5=3(x-5) = 2x-5=3x-15

(add 15 on both sides)

2x+10=3x

(subract 2x from both sides)

x=10

Therefore, Arjun is 20 years old and Shreya is 10 years old :)

4

step-by-step explanation:

6 (donuts) divided by 3 is 2.

so 2/3 means 2 times 2, which is 4/6.

you get two and your friend gets four.

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.