tank has steps inside it. A monkey is sitting on the topmost step
(i.e., the first step). The water level is at the ninth step.
(i) He jumps 3 steps down and then jumps back 2 steps up. In how many
jumps will he reach the water level?
(ii) After drinking water, he wants to go back. For this, he jumps 4
steps up and then jumps back 2 steps down in every move. In how many
jumps will he reach back the top step?
(iii) If the number of steps moved down is represented by negative
integers and the number of steps moved up by positive integers,
represent his moves in part (i) and (ii) by completing the following;
(a) − 3 + 2 − … = − 8 (b) 4 − 2 + …
= 8. In (a) the sum (− 8) represents going down by eight steps.
So, what will the sum 8 in (b) represent?
elevator descends into a mine shaft at the rate of 6 m/min. If the
descent starts from 10 m above the ground level, how long will it
take to reach − 350 m.
how much is 1 us dollar in indian currency
--= ++= -+= +-=
what is the history of integer?
5+3 (-34- (16-14) ) / 3(17+(-3)*4-2*(-7) )
pls answer this question
Find the angle which is equal to its supplement.
An elevator descends into a mine shaft at the rate of 6m/min .If the descent starts from 10m above ground level, how long will it take to reach -350 m .
The temperature at 12 noon was 10C above zero. If it decreases at the rate of 2C per hour until midnight, at what time would the temperature be 8C below zero? What would be the temperature at mid-night?
Can you make it simple please
write a pair of integers whose sum gives
a negative integer
an integer smaller than both the integers
an integer smaller than only one of the integer
an integer greater than both the integers.
In a class
test (+ 3) marks are given for every correct answer and (−2)
marks are given for every incorrect answer and no marks for not
attempting any question. (i) Radhika scored 20 marks. If she has got
12 correct answers, how many questions has she attempted incorrectly?
(ii) Mohini scores − 5 marks in this test, though she has got 7
correct answers. How many questions has she attempted incorrectly?
(iii) Rakesh scores 18 marks by attempting 16 questions. How many
questions has he attempted correctly and how many has he attempted
Write a pair of negative integers whose difference gives 8
A shopkeeper earns a profit of re 1 by selling one pen and incurs a loss of 40 paisa per pencil while selling pencils of her old stock.
(i) In a particular month she incurs a loss of Rs 5. In this period, she sold 45 pens. How many pencils did she sells in this period?
(ii) In the next month she earns neither profit nor loss. I she sold 70 pens, how many pencils did she sell?
THIS QUESTION IS IN NCERT BOOK IN PAGE 25 WITH SOLUTION BUT I CAN'T UNDERSTAND IT.....PLEASE MERITINATION EXPERT MAKE ME UNDERSTAND IT VERY PROPERLY SO THAT I HAVE NO CONFUSION
company earns a profit of Rs 8 per bag of white cement sold and a
loss of Rs 5 per bag of grey cement sold.
(a) The company sells 3, 000 bags of white cement and 5,000 bags of
grey cement in a month. What is its profit or loss?
(b) What is the number of white cement bags it must sell to have
neither profit nor loss, if the number of grey bags sold is 6,400
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