Question

a factory produced 3600 ship models 15% of them prescribed 7/10 of all good ship models were exported the bride and the remaining were sold locally what percent of ship models produce were sold locally

Answer 1

100% ^= 3600 ships

15% ^= 540 ships

3600-540=3060 good ships

30% of good ships is 918 ships get soled locally

Answer 2

prescribed: 3600 x 15% = 3600 x 0.15 = 540

exported: 3600 x $\frac{7}{10}$ = 2520

sold locally: 3600 - 540 - 2520 = 3600 - 3060 = 540

or

7/10 = 0.7 = 70%

If the prescribed is 15% and the exported is 70% then the remaining is 15%

.15(3600) = 540

Answer: 540