John ate too many holiday cookies and gained 2.3 kg in December then he went on a diet and lost 1.5 kg in January then he lost another 3.7 kg in February John wants to know what the total change in his weight was over these three months

Step-by-step explanation:

Alright, so John gained 2.3 kg. in December. He lost 1.5 kg. in Jan. so 3.7 minus 1.5 equals 2.2 kg. If he lost 3.7 kg. in Feb., John would have lost 5.9 kg. in total.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500