question_answer

In a party room, 20 workers will decorate 70 tables. Each table will be decorated with 10 silver balloons and 15 gold balloons. What is the total number of silver and gold balloons needed to decorate all the tables?

A)  \[70\left( 10+15 \right)\]       

B)         \[15\left( 70+10 \right)\]

C)  \[70\left( 10\times 15 \right)\]       

D)         \[20\left( 70+10+15 \right)\]