Tammy places 3 packets an equal distance from one another. The distance between the first packet and the third packet is 130 cm. If Tammy adds another 12 packets that are equal distance apart,
- How many gaps will there be between the twelfth packet and the fifteenth packet?
- What is the distance between the 12th packet and the 15th packet?
(a)
Number of gaps between 3 packets
= 3 - 1
= 2
Distance between two packets
= 130 ÷ 2
= 65 cm
Number of gaps between the twelfth and the fifteenth packet
= 15 - 12
= 3
(b)
Distance between the twelfth and the fifteenth packet
= 3 x 65
= 195 cm
Answer(s): (a) 3; (b) 195 cm