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Arithmetic: Percentage Test -8
His household expenditure=0.2p
Salary left after household expenditure=0.8p
Spending on childrens education=0.25×0.8p=0.2p
Spending on transport=.15×0.8p=0.12p
Spending on medicine=.15×0.8p=0.12p
Spending on entertainment=0.10×0.8p=0.08p
Mr X s total expenditure=0.2p+0.2p+0.12p+0.12p+0.08p=0.72p
Expense of Vimals=0.9p
Expense of Arnans=1.3×0.9p=1.17p
Arnan's expense =1.17×2100=2457
Number of girls=36/100×2000=720
Number Of boys=64/100×2000=1280
Total monthly fees=360×720+480×1280=873600
Initial decision to donate=16/100×p=0.16p
Now according to the question
6a/11 = 22b/100 ……….(1)
And b = c/4…………………(2)
We are also given by the value of c i.e. 2400
So the value of b would be 600
Now put b = 600 in equation 1
6a/11 = (22 x 600)/100
a = 242
Now 45% of 242 = 108.9
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