16
256
0.0667
15
240
-256
If you have 240 in the bank and your lessons cost 15, you can afford to have 16 lessons. 240 divided by 15 = 16
1
You can do this problem by multiplying by the reciprocal aka 16/1so 640 *16 =640 * 16 = 10 240
240 divided into the ratio 53 = 4.528301886792453
240
240