Instructions

For the following questions answer them individually

Question 32

Jina is 24 years younger than her mother. Eight years hence her mother’s age will be 3 times her age. What is Jina's mother present age (in years)?

Question 33

All the member of a homologous series can be represented by the same general formula.

Choose the INCORRECT formula from among the following.

Alkane ---- $$ C_{n}H_{2n+2} $$

Alkene ---- $$ C_{n}H_{2n+1} $$

Alkyne ---- $$ C_{n}H_{2n-2} $$

Question 34

The weights of Jaya and Vijaya are in the ratio 4:5. If the total of their weights is 72 kg, what is Vijaya’s weight?

Question 36

Brajen can paint a wall red in 10 hours while Ballari can whitewash the wall completely in 12 hours. If Brajen and Ballari work alternately for an hour each starting when the wall has just cement on it till when it is completely painted red, how many hours will it take to paint the entire wall red?

Question 37

Name the autobiography of Sanjay Manjrekar. the former India batsman-turned-commentator,

which was Iaunched in Mumbai on 17 January 2018.

Question 39

In $$ \triangle $$ ABC, AB = 10cm, $$ \angle $$ A is bisected internally BC at D. BD = 6 cm and DC = 7.5 cm. What is the length of CA?