Price break modifier - incremental basis

Hi,

Anybody have idea about the below said our business requirement kindly share the details to us it will be helpful

Qty Range Discount

Up to 350 - 1.50

351 to 450 - 2

451 to 550 - 2.50

550 Above - 3

Sales order is created as like below (the below said all items are in the one sales order)

Item A List price Rs.40 & order qty is 350

Item B List price Rs.41 & order qty is 550

Item C List price Rs.42 & order qty is 800

Item D List Price Rs.43 & order qty is 1000

Discount calculation should be for total order quantity as like below.

Slabs  Qty   Discount Discount Value

Slab1  350 -  1.5        - 525