Joshua has 2 ¾ times as many stamps as Leo. How many stamps must Joshua give to Leo so that each of them will have 210 stamps? Show your work

Joshua has to give Leo 93.75 (or 93 3/4) of his stamps

Step-by-step explanation:

210x2=240

210/4=52.5

52.5x3=157.5

157.5+240

So Joshua has 397.5 stamps

397.5-219=187.5

So there's a 187.5 difference

187.5/2=93.75

397.5-93.75=303.75

210+93.75=303.75

step-by-step explanation:

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hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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