please solve all of these I will mark you as brainlist, follow you , like you and give you five star
![](https://hi-static.z-dn.net/files/de2/1ade3c0dd3fa62a0d78c5147ed68e50d.jpg)
Answers
yee same questions aap ne doosri baar bhi post kia tha na, usme hoga 3rd question ka answer, dekhlijiye !
![](https://hi-static.z-dn.net/files/d58/bee5700ea2d8d8832771315072aae381.jpg)
![](https://hi-static.z-dn.net/files/d8a/d748842e95a99a4b96c9baa5e11afb9a.jpg)
![](https://hi-static.z-dn.net/files/d07/1a008955a39577268430b7029adfa686.jpg)
Answer:
1] Let present of rahul be x and present age of rohit be y 5 years ago ages are x-5,y-5.Given, x-5=3[y-5]⇒x=3y-10..........1 10 years later ages are x+10,y+10 Given,x+10=2[y+10].............2 [sub x value from equation 1 in equation 2] 3y-10+10=2y+20 ⇒y=20 sub y=20 in equation 1 x-5=3[20-5] ⇒x=50 ∴present ages of rahul and rohit are 50,20 years. 3] a10=46 ⇒n=10 an=a+[n-1] d ⇒a10= a+9d ⇒a=9d=46⇔[a=46-9d] ...........1 given , a5+a7=52 a5=a+4d, a7=a+6d a+4d+a+6d=52⇒2a+10d=52 .......2 sub a value from 1 in 2 92-8d=52⇒d=5 ∴A.P=1,6,11,16 sorry, i could not solve 2 question.