Explanation

If the cost of pesticides for a field is Rs 2 per square meter,

Rs 1600 will it cost to treat a field of 800 square meters 

Explanation

convert in m/s

90km×1000m=90000m

1hr=3600sec

9000m÷3600sec÷35m/s

35m/s×60÷2100

35m/s×2100÷52500

52500m÷1000m=52.5km

Explanation

Let's denote A's rate of work as A, and B's rate of work as B.

Given A + B together complete the work in 12 days:

(A + B)'s 1 day's work = 1/12

B alone completes the work in 20 days:

B's 1 day's work = 1/20

A's 1 day's work = (A + B)'s 1 day's work - B's 1 day's work

= 1/12 - 1/20

= (5 - 3) / 60

= 2 / 60

= 1 / 30

A alone will complete the work in 30 days.

Explanation

Q. Which of the following day is a holiday?

Ans: Wednesday

Ans: Tuesday

Ans: Monday

How many days after Physics is Biology?

Ans: 1 day

Explanation

Six scientists A, B, C, D, E, and F present a paper each at a one-day conference. Three of them will present their papers in the morning session before the lunch break whereas the other three will be presented in the afternoon session. The lectures have to be scheduled in such a way that they comply with the following restrictions.

• B should present his paper immediately before C's presentation; their presentations cannot be separated by the lunch break.
• D must be either the first or the last scientist to present his paper.

Question:

In case F and E are the fifth and sixth presenters respectively then which of the following must be true?

A) B is first in the order of presenters.

B) A is first in the order of presenters.

C) A is third in the order of presenters

D) A is fourth in the order of presenters.

Explanation

Q. What subject will start the series of lectures?

Ans: Algebra

Q. On which day the lecture of Physics is scheduled?

Ans: Tuesday

Ans: Monday

Ans: 1 day

Explanation

Diameter of car wheel is 84 cm

Circumference of the wheel = 2*pi*r

= 2*22*.42/7

= 2.64 meter

Speed of the car is 72 kmph

Speed in m/sec is 72*5/18 = 20 m/sec

Distance covered in 11 minutes = 20*11*60 = 13200 meter

Number of revolutions in 11 minutes = distance covered in 11 minutes / circumference of the wheel

= 13200/2.64

= 5000 revolutions

Explanation

B

ANS:

it is to note that in a fraction, the primary term of a proportion is called antecedent and the moment term is said to be consequent. Here the proportion is 6 : 11

The predecessor is 6 and the ensuing 11

predecessor is 34,

Explanation

Let's use this fundamental formula of

Distance = speed * time

By this, we get the speed of the train as (60/1.5)= 40 kmph

Since nothing is mentioned, assuming the train travels with the same speed ( I.e the speed is being assumed along the journey)

20/60 because 1 hour = 60 minutes. This means 20 minutes can be written as 0.3333 hours

Time = 20min = 0.3hr

Distance traveled = speed x time

Thereby, Distance is (40 x 0.3) = 12 km

ND16-8-2023

Explanation

2km East and 2km West brought you back on a straight line North-South.

Driving direction: 6km South + 4km South = 10km