a man burrowed rs 18000 for 2 years at 12 percent rate compounded annually. he paid only half of the principle after 2 years and remaining principal and interest at same rate but compounded semi annually. how much intrest was paid in 4 years

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants