Question

AccioJob - Batch 4 - Entrance Test
L.
QUESTION 6 OF 19
3 marks
O marks
90 percent of AccioJob students are experts in Java, 80 percent are experts in Golang, 75 percent are experts in Python and 70
percent are experts in C++. At least what percentage of AccioJob students are experts in all the four languages Java, Golang,
Python, and C++?
OPTIONS
a
10
15
E.
20
25​

Answer 1

Answer:

20

Step-by-step explanation:

Answer 2

Given data:

• $90\%$ are expert in Java

• $80\%$ are expert in Golang

• $75\%$ are expert in Python

• $70\%$ are expert in C++

To find: At least what perception of AccioJob students are experts in all the four subjects?

Step-by-step explanation:

Let us calculate by not expert values.

• $90\%$ students are experts in Java. Then $10\%$ students are not experts in Java.

• $80\%$ students are experts in Golang. Then $20\%$ students are not experts in Golang.

• $75\%$ students are experts in Python. Then $25\%$ students are not experts in Python.

• $70\%$ students are experts in C++. Then $30\%$ students are not experts in C++.

Thus a total of $(10\%+20\%+25\%+30\%)=85\%$ students are not experts in all the four languages.

Hence $(100\%-85\%)=15\%$ students are experts in all the four languages.

Answer: Option (b) 15%