In a survey 74 out of 88 tourists interviewed said they had visited at least one African, Europe, and South America of these, 19 had visited Europe and Africa, 30 Europe and South America, 26 south America and No one had visited only Africa , 10 only Europe, 7 only south America and x had visited all the three continents
A. Draw a Venn diagram to illustrate this information.
B. Write down a suitable equation and find the value of x
A.
Africa | Europe | South America
-------------------------------
19 | 10 | 7
x | x | x
B. x + 19 + 10 + 7 = 74
x = 38