QUESTION THREE $[20]$ You are planning a party with a budget of R$500.$ After of week of planning, you$$ve undertaken tasks worth R$200.$ However you spent R$150.$ Calculate the following: $3\mathrm{.}1$ Earned value $($EV$)(4)3\mathrm{.}2$ Schedule variance $($SV$)(4)3\mathrm{.}3$ Cost variance $($CV$)(4)3\mathrm{.}4$ Schedule performance index $($SPI$)(4)6\mathrm{.}5$ Cost performance index $($CPI$)(4)$