Question

These are my Questions-

1)In a quiz, positive marks are given for correct answers and negative marks are given
for incorrect answers. If Jack’s scores in five successive rounds were 25, – 5, – 10,
15 and 10, what was his total at the end?
2). At Srinagar temperature was – 5°C on Monday and then it dropped
by 2°C on Tuesday. What was the temperature of Srinagar on Tuesday?
On Wednesday, it rose by 4°C. What was the temperature on this
day?
3). A plane is flying at the height of 5000 m above the sea level. At a
particular point, it is exactly above a submarine floating 1200 m below
the sea level. What is the vertical distance between them?
4). Mohan deposits ` 2,000 in his bank account and withdraws ` 1,642
from it, the next day. If withdrawal of amount from the account is
represented by a negative integer, then how will you represent the amount
deposited? Find the balance in Mohan’s account after the withdrawal.
5). Rita goes 20 km towards east from a point A to the point B. From B,
she moves 30 km towards west along the same road. If the distance
towards east is represented by a positive integer then, how will you
represent the distance travelled towards west? By which integer will
you represent her final position from A?
6)Verify a – (– b) = a + b for the following values of a and b.
(i) a = 21, b = 18 (ii) a = 118, b = 125
(iii) a = 75, b = 84 (iv) a = 28, b = 11

Answer 1

Answer:

Solution (2): Jack's scores in five successive rounds are = 25, – 5, – 10, 15, 10

= 25+\left(-5\right)+\left(-10\right)+15+1025+(−5)+(−10)+15+10

= 35

is it ur answer dear