Mahindra & Mahindra Ltd (M&M) announced on Saturday that it has signed an agreement to buy a 58.96% stake in SML Isuzu Ltd. The deal values each share at ₹650, with a total investment of ₹555 crore. Under the agreement, M&M will purchase the entire 43.96% stake held by SML Isuzu’s promoter, Sumitomo Corporation, and …