Question

Don and his wife each receive an 8 percent annual raise. If don receives a raise rs.800 and his wife receives a raise of rs. 840, what is the difference between their annual income after their raises?

Answer 1

Answer:

Rs. 540

Step-by-step explanation:

Let x and y be the annual incomes of Don and his wife before raise.

Don's raise = 0.08x = 800

=> x = Rs. 10000

Don's income before raise = Rs. 10000.

Don's income after raise = Rs.10000 + Rs.800 = Rs. 10,800

Wife's raise = 0.08y = 840

=> y = 840*100/8 = 10,500

Wife's income before raise = Rs. 10500.

Wife's income after raise = 10,500 + 840 = Rs. 11,340

Thus the difference in annual income after raise = 11340 - 10800 = Rs. 540