40Hp.
I believe a standard 550 Jetski motor has 31HP. In actuality, it depends upon the year. HP ratings continued to improve as engine upgrades were rolled out.
The Whistler XTR-550 has received excellent ratings in the under $200 range.
550 + 550 = 1100
30% off $550 = $385= $550 - (30% * $550)= $550 - (0.30 * $550)= $550 - $165= $385
495550 decreased by 10 percent= 550 - (10% * 550)= 550 - (0.10 * 550)= 550 - 55= 495
60% of 550= 60% * 550= 0.6 * 550= 330
36% of 550= 36% * 550= 0.36 * 550= 198
90% of 550= 90% * 550= 0.9 * 550= 495
32% of 550= 32% * 550= 0.32 * 550= 176
76% of 550 = 76% * 550 = 0.76 * 550 = 418
550 percent as a fraction = 550/100 or 55/10 550% = 550%/100% = 550/100 or 55/10 in fraction