In a certain shop , 70 percent of customers buy mobiles made by company (A) and the rest buy mobiles...
In a certain shop , 70 percent of customers buy mobiles made by company (A) and the rest buy mobiles made by company (B) . A new mobile is made by company (A) . If 90 percent of customers who prefer company (A) and 50 percent of customers who prefer company (B) are expected to buy the new mobile , whats percent of customers are expected to buy the new mobile ?
Answer/Solution
78
Steps/Work
Say there are total of 100 customers in the shop . Thus 70 customers prefer company (A) and 30 customers prefer company(B).
70*0.9=63 customers who prefer company (A) are expected to buy for the new mobile ;
30*0.5=15 customers who prefer company (B) are expected to buy for the new mobile .
Thus total of 63+15=78 members are expected to buy the new mobile, which is 78% of the total number of customers .
Answer: B.
70*0.9=63 customers who prefer company (A) are expected to buy for the new mobile ;
30*0.5=15 customers who prefer company (B) are expected to buy for the new mobile .
Thus total of 63+15=78 members are expected to buy the new mobile, which is 78% of the total number of customers .
Answer: B.