Question

b) The sum of two integers is - 20. If one of them is 35 find the other.

Q-7 Do any four questions:

a) Subtract the sum of -7 and -17 from the sum of -36 and 42.

b) Ranjana started his journey by a car. She traveled north of Delhi by 35 km and then to the south of it by 75 km. How far from Delhi was Ranjana finally? c) If a day is 3/2 hours longer than a night, what is the length of each? Assume

that 1 day and 1 night together 24 hours. d) Find the money, 2/5 of which is rupees 40.

e) The product of two decimals is 1.944. If one of them is 0.32 find the other.​

Answer 1

Answer:

a) -36+42 -(-7+(-17))

=8-(-24)

=8+24

=32

Answer 2

Question :

The sum of two integers is - 20. If one of them is 35 find the other.

Answer :

sum of two integers = - 20

one no. = 35

Let the other no. be = x

A. T. Q -

x + 35 = - 20

x = - 20 - 35

x = - 55

Question :

Subtract the sum of -7 and -17 from the sum of -36 and 42.

Answer :

(-36 + 42 ) - (- 7 + ( - 17))

30

Question :

The product of two decimals is 1.944. If one of them is 0.32 find the other.

Answer :

Product of two decimal = 1.9444

one no. = 0.32

Let the other no. be = x

A. T. Q -

x ✖ 0.32 = 1.944

$x \: = \frac{1.944}{0.32} \\ 6.075$

Question :

Ranjana started his journey by a car. She traveled north of Delhi by 35 km and then to the south of it by 75 km. How far from Delhi was Ranjana finally?

Answer :

Distance travelled by car from Delhi to North = 35 km

Distance travelled by car from Delhi to South = 75 km

Actual distance = 75 - 35 = 40 km