* Self Practice 5.4
1. Mr. Tong ordered 1 000 Form 4 Mathematics textbook to be sold at his shop. He estimated
that 10 books would be sold on the first day, 14 books on the second day and 18 books on the
third day and the following day with the same increment.
(a) Calculate the number of days for Mr. Tong to sell all the books.
(b) Calculate the increment of the books to sell each day in order for all the books to be sold
in 10 days.
. A wire with length of 240 cm is cut into 15 pieces such that the length of each piece follows
the arithmetic progression. The longest piece of the wire is 30 cm.
(a) Calculate the length of the shortest wire.
(b) Find the difference between two consecutive wires.
OSHO​