Question

Chandra drew a rangoli pattern$.$ In each row $,$ She had placed $10$ dots$.$ She had put $\text{'}n\text{'}$ rows$.$

How many dots did she put for $7$ rangoli made of same number of dots$?$

Answer 1

It is given that number of rows $=n$

Number of dots in each row $=10$

Total number of dots put for the entire rangoli $=$number of rows $\times$number of dots in each row

$=n\times 10$

$=10n$

The number of such rangoli are $7$

Total number of dots for $7$ rangoli $=10n\times 7$

$=70n$

Hence$,$ the total number of dots she put for the $7$ rangoli are $10n$