Question

David and his wife each receives an 8 percent annual rise. if david receives a raise of rs 800 and his wife receives a raise of rs 840, what is difference Between their annual incomes after their raises?​

Answer 1

Answer::

Let David's annual income be Rs. x and his wife's annual income be Rs. y

Then,

8% of x = 800

⇒ 8100

x = 800

⇒ x = (800×1008)

⇒ x = 10000

And, 8% of y = 840

⇒ 8100

y = 840

⇒ y = (840×1008)

⇒ y = 10500

∴ Required difference :

= [(10500 + 840) - (10000 + 800)]

= Rs. (11340 - 10800)

= Rs. 540 Answer

Answer 2

D)540

D)540Don salary 8% = 800 ; Therefore, 100% = 10000

D)540Don salary 8% = 800 ; Therefore, 100% = 10000His wife salary 8% = 840; Therefore, 100% = 10500

D)540Don salary 8% = 800 ; Therefore, 100% = 10000His wife salary 8% = 840; Therefore, 100% = 10500After raise 8%,

D)540Don salary 8% = 800 ; Therefore, 100% = 10000His wife salary 8% = 840; Therefore, 100% = 10500After raise 8%,Don salary = 10000 + 800 = 10800

D)540Don salary 8% = 800 ; Therefore, 100% = 10000His wife salary 8% = 840; Therefore, 100% = 10500After raise 8%,Don salary = 10000 + 800 = 10800And his wife salary = 10500+ 840 = 11340

D)540Don salary 8% = 800 ; Therefore, 100% = 10000His wife salary 8% = 840; Therefore, 100% = 10500After raise 8%,Don salary = 10000 + 800 = 10800And his wife salary = 10500+ 840 = 11340Difference = 11340 - 10800 = 540

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