Q3.

A 2 cm wide wooden strip is to be fixed on a photo of 40 cm x 30 cm size all along its four sides. What is the minimum length of the wooden strip required?

Q4.

A block of marble 5 m x 4 m x 2 m in size is cut into rectangular tiles of 1 m x 0.5m size having thickness of 10 cm. Assuming 10% wastage in cutting, how many tiles will be made?

Q5.

A pilgrim starts walking for a journey of 115 km. On the first day he covers 7 km, the next day 9 km, and likewise keeps adding 2 km everyday till he reaches 15km per day which he maintains for the rest of the journey. How many days in all will he take to complete the journey?