Honda Motor Co said on Friday its quarterly net profit jumped 20 percent, beating estimates, as strong sales in the United States and a weak yen helped it absorb the impact of higher quality-related costs. April-June net profit at Japan’s third-biggest automaker rose to 186.04 billion yen ($1.50 billion), from 155.60 billion yen a year earlier. Honda reported the first-quarter results under international accounting standards for the first time.