Q3.

In ΔABC, ∠A = 48°. If the bisectors of ∠B and ∠C meet at I, then the measure of ∠BIC will be:

Q4.

Hari and Mohan can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Shyam completes rest of the work in 3 days. How many days Shyam alone can take to complete the whole work?

Q5.

The following question consists of three statements. You have to study the question and the statements, and decide which of the statements is/are necessary to answer the question.

What is Arnav's present age?

I. Five years ago, Arnav's age was double that of his son's age at that time.

II. Present ages of Arnav and his son are in the ratio of 11 ∶ 6.

III. Five years hence, the ratio of Arnav's age and his son's age will become 12 ∶ 7.