1. A gardener has 1000 plants. He wants to plant them in such a way that the number of columns and the number of rows remains the same. What is the minimum number of plants that he needs more for this purpose?
Answer with solution:
Required minimum number of plants
= 322 - 1000
= 1024 - 1000
= 24
2. A and B can separately do a piece of work in 20 and 15 days respectively. They worked together for 6 days, after which B was replaced by C. If the work was finished in the next 4 days, then the number of days in which C alone could do the work will be how many days?
Answer with solution:
Work of (A+B) = 6(1/20 + 1/15)
= 7/10 part.
Remaining work after 6 days,
=1-7/10 = 3/10 part
Let C can do the work in X days.
= 4 x (1/20 + 1/X)
3/10 part.
so, 1/20 + 1/X = 3/40
so, X = 40.
Here C alone can do the work in 40 days.
3. 74 + 12 x 0.75 - 6 = ?
Answer with solution:
? = 74 + 12 x 0.75 - 6
=74 + 9 - 6 = 77
4. In a class of 65 students and 4 teachers, each students got sweets that are 20% of the total number of students and each teacher got sweets that are 40 % of the total number of students. How many sweets were there?
Answer with solution:
Number of total sweets,
= 65 x 65 x 20/100 + 4 x 65 x 40/100
= 845 + 104 = 949
Tag: Aptitude questions. test, aptitude, aptitude quiz
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