Wow! MashAllah all your answers are absolutely correct! Thanks for the working. It definitely helped me a lot!I'll try:
Q28 Find the number of hours, that will be (200/20) 10hrs. The actual hours are 25% more so adding 25% to 10hrs gives you (10 x 125%) 12.5hrs. Now calculate total cost 680+(12.5 x 20)+(12.5 x 10)=1055. Deduct from the price to obtain profit of (1260-1055) $205
Q26 As your production is more than 20000 units you need to increase your rent by 50%, 6000 x 150% = 9000. So now your fixed costs will be 15000-6000+9000=18000. fixed cost per unit=18000/30000=0.6. Total cost per unit=0.6+0.6= 1.2.
Q25 We assume the fixed to be distributed equally so 24000 for product X. The contribution is 20-10-4=6. So break even will be 24000/6= 4000 units.
Do check the answers and lemme know if I'm wrong