question_answer

The pictograph shows the number of beads of different colours in a box. The number of yellow beads is not shown. Key: Each  represents 15 beads. Altogether there are 510 beads in the box. How many  must be drawn in the pictograph to represent the yellow beads?

A) 5                            

B) 6

C) 7                              

D) 8

Correct Answer: C

Solution :

Each  represents 15 beads. There are 510 beads in the box. \[\therefore \] Number of symbols \[=\frac{510}{15}=34\] Number of symbols present on the graph =10+9+8=27 \[\therefore \]Number of symbols to be drawn to represent yellow beads \[\text{= 34 - 27 = 7}\]