Diana places 6 packets an equal distance from one another. The distance between the first packet and the sixth packet is 120 cm. If Diana adds another 12 packets that are equal distance apart,
- How many gaps will there be between the twelfth packet and the eighteenth packet?
- What is the distance between the 12th packet and the 18th packet?
(a)
Number of gaps between 6 packets
= 6 - 1
= 5
Distance between two packets
= 120 ÷ 5
= 24 cm
Number of gaps between the twelfth and the eighteenth packet
= 18 - 12
= 6
(b)
Distance between the twelfth and the eighteenth packet
= 6 x 24
= 144 cm
Answer(s): (a) 6; (b) 144 cm