1. Shobha's mathematics test had 75
problems i.e. 10 arithmetic, 30
algebra and 35 geometry problems.
Although she answered 70% of the
arithmetic, 40% of the algebra and
60% of the geometry problems
correctly, she did not pass the test
because she got less than 60% of the
problems right. How many more
questions she would have needed to
answer correctly to earn a 60%
passing grade?
Answers
Answered by
11
Answer:
Step-by-step explanation:
Total no. of problems is 75
70% of 10 are arithmetic =
100
70
×10=7 right
40% of 30 are algebra =
100
40
×30=12 right
60% of 35 are geometry =
100
60
×35=21 right
Total of right problems =7+12+21=40
% of right problems =
75
40
×100=53.3%
To get 60% she needs
100
60
×75=45 right problems
So she needs 45−40=5 more problems right to get 60%
pls mark as brainliest pls pls pls pls
Answered by
0
Answer:
75:10 30:35 70:40
Step-by-step explanation:
Similar questions