MATHS Fill in the blanks.

25 boxes of 12 ice-cream cups each, cost ₹ 10500. The cost of 15 boxes of 20 ice-cream cups each, will be __________.

A worker is paid ₹ 1610 as wages for 14 days. His wages for 30 days will be __________.

If 1 dozen eggs cost ₹ 54, then a tray of 30 eggs will cost _________.

If 6 pens cost ₹ 69, then the cost of 16 pens is ________.