At a school the ratio for boys and girls is 11: 9 there are 124 more boys then girls whats the total number of pupils

124 more boys than girls

ratio of boys to girls = 11:9

thus difference of boys to girls is 2/20 = 124

total number of pupils = 124 ÷ 2/20 = 1240 pupils

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

14

step-by-step explanation:

14