Question

What is the greatest number of rows Li Na can plant?

Answer 1

Answer:

Li Na would like to plant the plants in rows where each row has the same number of tomato plants and each row has the same number of rhubarb plants.

Answer 2

To Find:   What is the greatest number of rows Lina can plant

Step-by-step explanation:

To get the  greatest number of rows Lina can plant  she should plant 1  tomato / 1 rhubarb  in each row

Hence greatest number of rows = 63 + 81  = 144

To find the least number of rows:    or greatest plant in a row.

need to find  first HCF of 63 and 81

63 = 7 * 9   , 81 = 9 * 9

HCF = 9

Hence   9 plants in a row

9 plants in a row are the greatest

Number of rows  =  63/9  + 81/9  = 7 + 9  = 16

Least number of rows:   = 16

Each time Mariam goes to the store she plans to spend Rs. 30, and each time Sana goes to the store she plans to spend Rs. 50

LCM of 30 and 50   =  150  

least possible number of times that Mariam has been to the store = 150/30  = 5