What is 15% of 5.20 pounds?
"what" means x
"is" means =
"%" means /100
"of" means *
x = 15/100 * 5.2
x = 0.78
Answer: 0.78 pounds spent on sweets.
.
How much is 35% of 5.20 pounds?
x = 35/100 * 5.20
x = 1.82
Answer: 1.82 pounds spent on magazines.
.
How much is left?
100% - 15% - 35% = 50%
Jack has 50% left.
.
How much is 50% of 5.20 pounds?
x = 50/100 * 5.20
x = 2.60
Answer: Jack has 2.60 pounds left.